He has worked the maths problem for nearly an hour but he simply can’t work it .
On ;at B. on ;out C. at ;up D. for ;out
I don’t care whatever difficulty I will have _________ this survey.
| A．conduct | B．to conduct | C．conducted | D．conducting |
---What do you think of the movie?
---Wonderful. It couldn’t be ________.
| A．so good | B．the best | C．any better | D．worse |
The conference has been held to discuss the effects of tourism _________ the wildlife in this area.
| A．in | B．on | C．at | D．with |
It ______ be better if I could earn enough money to buy a private car.
| A．will | B．must | C．shall | D．would |
The woman was _______ by the man’s offer of marriage and gave him most of her money.
| A．taken in | B．taken off | C．taken over | D．taken on |