Half an hour later, Lucy still couldn’t get a taxi _______ the bus had dropped her.
A. until B. when C. although D. where
It was John who broke the window. Why are you talking to me as if I _______ it?
A. had done B. have done C. did D. am doing
--- Is it true that Mike refused an offer from Yale University yesterday?
--- Yeah, but I have no idea _______ he did it; that’s one of his favorite universities.
A. when B. why C. that D. how
Group activities will be organized after class _______ children develop team spirit.
A. helping B. having helped C. helped D. to help
--- I spent two weeks in London last summer.
--- Then you must have visited the British Museum during your stay, _______ you?
A. mustn’t B. haven’t C. didn’t D. hadn’t
We’ll reach the sales targets in a month _______ we set at the beginning of the year.
A. which B. where C. when D. what
