Read the student's desperate email to their professor. Drag the appropriate contrast and transition words into the blanks to complete the message.

I completed the entire essay on time; however, my cat walked across the keyboard and permanently deleted the file.

I am asking for a 24-hour extension, although I know your syllabus strictly forbids late work under any circumstances.

I did manage to recover the title page and the bibliography, though.

I completed the entire essay on time; however, my cat walked across the keyboard and permanently deleted the file.

"However" correctly shows contrast and fits the punctuation (semicolon before, comma after). "Therefore" would incorrectly imply the cat deleting the file was the result of finishing the essay.

I am asking for a 24-hour extension, although I know your syllabus strictly forbids late work under any circumstances.

"Although" introduces a dependent clause that contrasts with the main clause. "Because" would incorrectly mean the student is asking for an extension due to the strict rule.

I did manage to recover the title page and the bibliography, though.

Used at the end of a sentence, "though" functions as an adverb showing contrast with the previous negative information. "Although" cannot be placed at the end of a sentence.