Look! Xiao Wang is too sleepy to work . He ____ up watching TV .
| A．mustn''t have stayed | B．shouldn''t have stayed |
| C．mustn''t stay | D．ought not to stay |
___that she’s by law old enough to get married, I don’t see how you can stop her.
| A．Having seen | B．To see | C．Seeing | D．Seen |
He bought some books, ______ were expensive.
| A．most of which | B．the most of which |
| C．most | D．the most of that |
The city was difficult ________, _________ was defended by an army of 6,000 men.
| A．to be taken; which | B．to take; that |
| C．to take; which | D．to be taken; that |
---- Could you do me a favour and take the box up to the six floor? ---- ______. No problem at all.
| A．With please | B．My pleasure | C．For pleasure | D．at your pleasutre |
How did you manage to get to school on time ______ you missed the school bus?
| A．when | B．if | C．once | D．because |