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①be able to
②space station
③look for
④help sb. with sth.
⑤make sb. do sth.
— _________. They can't live so long.
— I don't _________ you. They are both useful.
will you live in Shanghai?
What will teenagers do for fun ?
There lots of cars in the town in five years.
Yes, .
There a girl in the room.
It for me to work out that difficult problem.
It Tom two hours his homework.
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