How long do you think it will be _____ we can find a new water source?
A. after B. before C. when D. since
High up in the mountains _____ a quiet small village, with only 20 households.
A. surrounds B. locates C. lies D. lays
A heavy snow promises a good harvest, _____ is often the case.
A. where B. as C. that D. what
After his wife died, he kept himself _____ from other people and the outside world,
A. set off B. cut off C. put off D. taken off
— Why is little Jimmy so naughty today? A. will be B. is being
— He is bored, so he _____ a little silly. C. had been D. would be
— Real Madrid is sure to win the match!
— It's hard to say. You know, anything _____ happen even in the last minute.
A. can B. must C. should D. need
