---Why didn’t you accept such a good job?
---Oh, it’s _________ my ability, so I had to give it up.
| A．across | B．under |
| C．over | D．beyond |
It is difficult __________ you ___________ finish the work in a week.
| A．of, to | B．with, to | C．with, for | D．for, to |
I can’t understand ____________ the boy alone.
| A．why did she leave | B．why had she left | C．why she left | D．why she had left |
They asked many questions ___________ had nothing to do with that topic.
| A．which | B．who | C．where | D．when |
_____________ is necessary __________ he trains himself before the Guangzhou Marathon.
| A．This, 不填 | B．The, 不填 | C．It, that | D．This, that |
___________ a sportsman is a hard job, but you are very excited if you are successful in ____________a good medal.
| A．To be, get | B．Being, getting | C．Being, to get | D．To be, to get |