In my opinion, it's the flying birds rather than the pilot that________for the air crash.
——I think the book is as interesting as it is instructive. —— It could never be____.It is well worth reading.
He decided that he would drive all the way home instead of ______at a hotel for the night. A. putting down B. putting off C. putting up D putting on
——I'd rather have some wine, if you don't mind. —— __.Don't forget that you'11 drive.
His younger sister may already be in high school now, in ___ case this picture book is too childish for her.
Jerry has promised to keep the secret, so he won’t tell anyone even though ______.