_______ you feel exhausted after the long tiring journey, you may as well take a good rest at home.
A. So that B. In that C. Now that D. In order that
----Would you mind if I turned off the light?
----____________.
A. Yes, go ahead B. No, please don’t C. Go ahead, please D. Certainly, do as you please
---- You _____ have given them some advice.
---- So I did, but who cared what I said?
A. must B. ought to C. might D. could
Reportedly yesterday a group of American soldiers were walking along the road in Iraq when a bomb（炸弹） was _____, three of whom were killed.
A. set about B. set off C. set up D. set out
He is never allowed ________ in the room.
A．to smoke B．smoking C．smoked D．to be smoked
They want to know ________ do to help us.
A．what can they B．how they can C．what they can D．how can they
