If they ______, our plan will fall flat.a. are co-operating b. had not co-operated c. won’t co-operate d. didn’t co-operate
It was after he got what he had wanted very much _______ he realized it was not important.
This year this factory has produced ________ cars as it did last year.
The famous writer our Chinese teacher often referred ________ at our school yesterday.
Please go ________ the ship quickly. There is only ten minutes left.
The question came up at the meeting _________ we had enough money for our research.