题目内容

If prices rise too high, the government has to do something _________ it.
A．stopB．stoppedC．stoppingD．to stop
D
动词不定式的用法。由句意“如果物价涨的太高，政府就不得不采取措施来阻止。”动词不定式在句中作目的状语，说明“采取措施”的目的是“来阻止物价上涨”。故选D。
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