he has some problems__his work.请问用什么介词

he has some problems__his work.请问用什么介词
选项有 A to doB doCof doingD doing
英语人气:180 ℃时间:2020-01-24 23:15:35
优质解答
选择Dhave problem doing sth.have a hard time doing sth.have a difficult time doing sth.have trouble doing sth.have difficulties doing sth.这些短语都是"做某事有困难"的意思
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