---- My baby has a heart trouble. ---- Did the doctor find it difficult_刷题宝

题干

---- My baby has a heart trouble. ---- Did the doctor find it difficult ______ ?

A．in treating

B．treating

C．for treating

D．to treat

上一题下一题 0.64难度单项选择更新时间:2010-06-18 10:15:25

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