Help Detective Paws finalize his official report about the notorious cat burglar's interrogation. Drag the correct reported verb phrases to match the suspect's original statements.
(Direct speech: "I must have dropped the tuna." / "Shall I show you the paw prints?" / "I needn't explain myself.")
The suspect admitted that he must have dropped the tuna at the crime scene. Then, he cheekily asked if he should show me the paw prints on the vault. Finally, he haughtily declared that he didn't have to explain himself to a mere dog.
The suspect admitted that he must have dropped the tuna at the crime scene.
When reporting a past deduction ("must have done"), the modal phrase does not change in indirect speech. "Had to drop" would incorrectly imply a past obligation rather than a deduction.
Then, he cheekily asked if he should show me the paw prints on the vault.
When "shall" is used in a direct question to make an offer or ask for advice ("Shall I...?"), it changes to "should" in reported speech.
Finally, he haughtily declared that he didn't have to explain himself to a mere dog.
The present lack of obligation ("needn't do") changes to "didn't have to do" (or "wouldn't have to do") in reported speech. "Needn't have explained" has a completely different meaning: it means he actually did explain it, but it was unnecessary!
Indirect speech
Indirect speech (also called reported speech) is how you tell someone what another person said without quoting their exact words. "I like apples" → He said that he liked apples. The signature move is backshift: tenses move one step into the past when the reporting verb (said, told, thought) is itself in the past — present becomes past, past becomes past perfect, will becomes would, can becomes could.
Pronouns and time expressions also shift to fit the new perspective: "I'll see you tomorrow" → She said she'd see me the next day. Mastering this is essential for B1+ communication, especially in writing.
Modal verb
A modal verb is a special class of auxiliary — can, could, may, might, must, shall, should, will, would — that adds shades of meaning around possibility, ability, permission, obligation, or speculation. I can swim (ability), You should rest (advice), It might rain (possibility), You must leave (obligation).
Modals are grammatically peculiar: no -s in the third person (she can, not she cans), no infinitive, no participle, followed by the bare verb (I can swim, never I can to swim). Mastering them is the move from describing facts to expressing how you feel about them — likelihood, necessity, recommendation.
Verb
A verb is a word that expresses an action, a state, or an occurrence — the engine of every English sentence. Most verbs have five forms: base (go), -s form (goes), past tense (went), past participle (gone), and -ing form (going). The verb be is the major exception with eight forms; modal verbs like can and must have fewer.
Verbs carry tense (when), aspect (how it unfolds), mood (the speaker's attitude), and voice (active vs passive). Mastering them is foundational — virtually every other grammar topic depends on getting verbs right.
C1 | Advanced
C1 is the advanced level in the CEFR framework, sitting between B2 and C2. At C1 you stop translating in your head and start thinking in English — handling specialised articles outside your field, picking up implicit meaning, and writing structured arguments on complex topics.
Grammatically, C1 means natural use of inversion (Rarely have I seen…), mixed and advanced conditionals, subjunctive forms in formal contexts, and cleft sentences for emphasis. Most university programmes for non-native speakers and many professional certifications set C1 as their entry standard.
Difficulty: Hard
The Hard difficulty tag marks questions and challenges aimed at upper-intermediate to advanced learners — typically B2 and above. Expect interacting rules, edge cases, distractors that look right at first glance, and contexts where the surface meaning and the grammatical answer don't match.
Filter by Hard when you're past the basics and want material that genuinely tests your understanding. These questions catch the gaps your textbook didn't — register-sensitive choices, exception cases, mixed conditionals, the difference between would have been and had been.