1 . The description is pretty ______, so the police can’t figure out the portrait of the criminal.

A．vague

B．accurate

C．particular

D．vain

2 . I tried all means to look for my keys, but everything was in _______(徒劳).

3 . He tried very hard to find the lost document, but in v____________. It was nowhere to be found. （根据首字母单词拼写）

4 . All his efforts were not in v____ and his novel became a best seller. （根据所给首字母单词拼写)

5 . I am grateful to my tutor as she is        enough to overlook my little mistakes.

A．vain	B．rigid
C．modest	D．generous