If I had been a serious student, I ................. from university.

In which of the following sentences is all PUNCTUATION correct?

Which sentence has the CORRECT WORD ORDER?

Mom: George! I… ........... for you since 5:00 to help me. George: sorry, mom I was in the basement.

Mr. Smith has bad eyesight, so he hates driving… ............. night.

Mr. Harris has no brothers or sisters, .......................... ?