Although they were tired, they still went on _____.
A. working B. to work C. work D. worked
_____ you tell me how to use this digital dictionary?
A. May B. Must C. Can D. Need
We _____ more than 1,200 English words already, do you know?
A. learn B. will learn C. have learned D. are learning
I went to Sanya with my family this summer and all of us _____ a good trip.
A. have B. are having C. will have D. had
—Which subject is _____, Chinese or maths?
—I think maths is.
A. difficult B. more difficult C. most difficult D. the most difficult
—_____were you born, Peter?
—I was born in 1998.
A. What B. Where C. When D. Why