Kathy __________a lot of English idioms by watching documentaries made by BBC.
A. picked up B. took up C. made up D. turned up
No one ________be more generous; he has a heart of gold.
| A．could | B．must |
| C．dare | D．need |
—You needn’ t take an umbrella.It isn’t going to rain.
—Well，I don’t know.It________do.
| A．might | B．need |
| C．would | D．should |
Since nobody gave him any help，he________have done the research on his own.
| A．can | B．must |
| C．would | D．need |
－I'm afraid that I couldn't pass the examination.
－As a student，you need to believe in yourself________you have the ability to achieve any________goal.
| A．knowing；to be set | B．knowing；set | C．known；setting | D．known；to be set |
－Sir，may I borrow some new books?
－Sorry，you can't________you haven't turn back those you borrowed one month ago.
| A．unless | B．before | C．because | D．until |