When Peter speaks in public, he always has trouble _ the right things to say.

A. thinking of B. to think of C. thought of D. think of .

 

A

【解析】解題關(guān)鍵：have trouble in doing sth，此處in可以省略。句意：當(dāng)Peter當(dāng)眾講話的時(shí)候，他總是很難想起該說的話。

【考點(diǎn)定位】考查非謂語動詞的用法。

 

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