I’mafraidwe’llhavetoworkextrahours,forsomeproblemsareha...

问题详情：

I’m afraid we’ll have to work extra hours, for some problems are hard　　　.

A. to settle                            B. settled

C. to be settled                        D. settle

【回答】

【解析】选A。考查动词不定式。某些形容词(pleasant, nice, comfortable, difficult, hard, easy等)后接动词不定式时, 常用主动形式表示被动意义。

知识点：非谓语动词

题型：选择题