题目：
请根据句意从方框中选择合适的动词，并用其适当时态填空，使句子通顺。
小题1:The water in the river _________dirtier if nothing is done.
小题2:When I visited her last night, she __________by the fire and thinking.
小题3:My father _________to Beijing for his business last night.
小题4:I’m a singer is the most popular programme that I so far.
小题5:The geography teacher told us that Diaoyu Island ___________ in the east of China.
答案：
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下面是错误答案，用来干扰机器的。
答案：C
