---- Sorry, I have to ______ now. It’s time for class.
---- OK, I’ll call back later.
| A．hang up | B．break up | C．give up | D．hold up |
I ________ myself more－it was a perfect day.
| A．shouldn’t have enjoyed |
| B．needn’t have enjoyed |
| C．wouldn’t have enjoyed |
| D．couldn’t have enjoyed |
—What are you doing this Saturday?
—I’m not sure，but I________go to the Rolling Stones concert.
| A．must | B．would |
| C．should | D．might |
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 |