题目内容
请按句意及所给的汉语提示，写出空缺处单词的正确形式。
Is the river deep ________(足够)for swimming in?
We live in a flat with two ________(卧室)．
There is a bank ________(在……后面)the bus station．
Which is ________(安全的), traveling by train or by plane?
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