To my surprise, I hurried to the lecture hall only ______ that the lecture had been cancelled.
A. to be informed B. being informed C. to inform D. informing
--- Hey, Mary, your backpack looks nice. When did you buy it.
--- I ____ it for two weeks.
A. had B. bought C. have had D. have bought
Why do you insist on buying a car ______ you have such good public transportation here?
A. because B. unless C. when D. though
The owner still doesn’t know _______ broke into the house and stole the money.
A. when it was that B. who it was that C. who was it that D. when was it that
The scientists have made an exhaustive study of the virus _______ many people have been inflected.
A. to which B. in which C. with which D. for which
When I was in Spain last summer, I ______ quite a lot of Spanish.
A. made up B. picked up C. gave up D. took up
