—Tomorrow is a holiday. Why are you doing your homework now?
—I am doing these exercises so that I won’t have tomorrow.
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| A．to | B．it | C．them | D．for |
With all the family members ______ on vacation without him, the boy felt extremely lonely and afraid.
| A．to have gone | B．going | C．had gone | D．gone |
Why so many youths are _____ on playing computer games often puzzles us a lot.
| A．fascinated | B．crazy | C．keen | D．fond |
_______ 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 |
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 |