____
___ to take this advance course will certainly learn a lot of useful skills.
| A．Brave enough students | B．Enough brave students |
| C．Students brave enough | D．Students enough brave |
It was the hurricane ______ was called Katrina ______ destroyed the city of New Orleans.
| A．which; that | B．what; which | C．which; who | D．that; which |
____ the bike Smith had stolen ?
| A．Been | B．Did | C．Was | D．Had |
He looks very tired . He ____ to bed too late last night .
| A．must go | B．must have gone | C．could go | D．didn''t go |
The girl was frightened by the thief , and she stood there without ____ speak .
| A．daring to | B．daring | C．dare to | D．dared to |
Why did you keep it a secret from me ? I ____ about it .
| A．should be told | B．ought to have been told |
| C．should have told | D．ought to be told |