I can never forget the days _____ we worked together and the days _____ we spent together.A. when; which B. which; when C. what; that D when; when
It was about 5 o’clock in the afternoon _______ they had their supper.
The teacher knows that you are always the first ________ to the classroom since last september.
We can’t take part in the competition ________ we get our student card.
It was announced that only when the examination papers were handed in ________to go out of the classroom.
As a result of the heavy snow,two-thirds of the buildings in the area. A. need to repair B.needs to repair C.needs repairing D need repairing.