Tens of thousands of trees _____ in the area in the past few years.

A. have been planted   B. were planted      C. have planted         D. had planted

 — I'm wondering why the visitors chose to stay with the host family.

— _____real local life.

A. Experiencing         B. Experience           C. To experience      D. Having experienced

 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

 Thomas set off, leaving word with his daughter _____ he would come back soon.

A. who             B. when                 C. what            D. that

 Our train was two hours ______ because of strong winds and heavy rains.

A. late              B. later                   C. latest          D. lately