问题

For most people, it’s very difficult to _____ air on the top of Qomolangma.
A:take out
B:take off
C:take up
D:take in
B:take off
C:take up
D:take in
正确答案是:
同类题型
It _______ seven years __________ Hong Kong returned to China.
What were you doing this time yesterday?—-I ________ my homework at John’s house.
We missed our train, and ___ the next train was delayed, ____ we had to wait for two hours.
Kate didn’t go to the cinema last night because she had to ________ her sick dog.