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we got lost on a rainy night. B. that D. when3. See the flags on top of the building? That was _______ we did this morning.A. when B. which C. where D. What4. —Could you do me a favor?—It depends on _______ it is. A. which B. whichever C. what D. whatever5. These shoes look very good. I wonder _______. A. how much cost they are B. how much do they costC. how much they cost success lies in the fact _______ she is cooperative and eager to learn from others.A. which B. that C. when D. why7. Mary wrote an article on _______ the team had failed to win the game. A. why B. what C. who D. that8. Do you have any idea _______ is actually going on in the classroom? A. that B. what C. as D. which9. —Why does she always ask you for help? —There is no one else _______, is there? A. who to turn to B. she can turn to C. for whom to turn D. for her to turn10. Elephants have their own way to tell the shape of an object and _______ it is rough or smooth. A. / B. whether C. how D. what11. Danny left word with my secretary _______ he would call again in the afternoon. A. who B. that C. as D. which12. Mum is ing. What present _______ for your birthday? A. you expect she has got B. you expect has she gotC. do you expect she has got D. do you expect has she got13. The way he did it was different ________ we were used to. A. in which B. in what C. from what D. from which14. Great changes have taken place in that school. It is no longer _______ it was 20 years ago, _______ it was so poorly equipped. A. what。 which C. what。 that15. Some researchers believe