题目内容

You can’t imagine what great trouble they have _________ the problem_______.
A.to solve; being talked aboutB.solving; discussing
C.to solve; to talk aboutD.solving; being discussed
D
本题考查非谓语动词。第一个空考查定语从句。 定语从句为they have _____ the problem _____.部分,其中考查词组:have trouble (in )doing sth. trouble作为先行词提前。第二个空考查词组:have sth. done 的结构,意为“使...被”
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