选择填空:Paul doesn't know ____ to talk ___ when he has problems.
问题描述:
选择填空:Paul doesn't know ____ to talk ___ when he has problems.
A who,about B what,to C whom,to D when,with
PS:分析
答
答案:C
whom 引导宾语从句,whom同时作talk to 的宾语.