Jane was asked a lot of questions, but she didn’t answer of them.
If the American government the expert’s suggestion, the world economy would not be in such a mess now.
He had hardly reached home _______ an unexpected guest came to visit him.
Had they known what was coming next, they ___________ second thoughts.
I don’t know how it ___________ that our car was bumped from behind.
—How do you like your trip to Hainan?—________,I enjoyed it very much,although the weather was hot sometimes.