Help the office manager finish his dramatic email to the lunch thief by choosing the correct word for each blank.

You claim it was an innocent mistake. However, what you forgot to check was the security camera hidden above the microwave. A formal, written apology is what the HR department expects from you by 5 PM. Furthermore, all you actually achieved today was proving that you cannot be trusted with other people's yogurts!

You claim it was an innocent mistake. However, what you forgot to check was the security camera hidden above the microwave. A formal, written apology is what the HR department expects from you by 5 PM. Furthermore, all you actually achieved today was proving that you cannot be trusted with other people's yogurts!

forgot: The past tense "forgot" correctly agrees with the past tense verb "was" that links the two parts of the cleft sentence.

what: This is an inverted wh-cleft sentence. Instead of starting with "What," the focused element ("A formal, written apology") comes first, followed by the "be" verb ("is"), and finally the what-clause. "Which" and "how" do not form pseudo-cleft sentences in this manner.

all: We can use "all" (meaning "the only thing") instead of "what" to form a cleft sentence that adds a slightly different emphasis. "Whole" and "every" are incorrect because they require a following noun (e.g., "every thing").