问题描述：
1.Look ,there are some pieces of paper on the floor.Please--(pick up them/pick them up)
2.This sign tells us the exit-- the gate of the cinema.(for/at)
3.---,they met a heavy rain on their way home.(unlucky/unluckily)
2.This sign tells us the exit-- the gate of the cinema.(for/at)
3.---,they met a heavy rain on their way home.(unlucky/unluckily)
问题解答：
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