You can’t imagine what difficulty we had________home in the snowstorm.

A．walked　B．walk

C．to walk　D．walking

 

D

【解析】考查have difficulty (in) doing sth.短語(yǔ)的變式運(yùn)用。difficulty在句中充當(dāng)先行詞，其后為定語(yǔ)從句。

答案：　D

 

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