He reads newspapers every day to keep himself _______ about what's going on in the world.
| A.inform | B.informing | C.informed | D.being informed | 
—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 | 
-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 |