21．I suggested not only ________ to the meeting but also give a speech there.
A．did he go B．his going
C．should he go D．he should go
答案与解析：C 考查倒装句。句意：我建议他不但要参加这次会议，而且还要在那做报告。not only...but also...引导两个并列句子时，not only引导的句子要倒装。再根据前面主句是“I suggested...”可以排除A项。因此C项为正确答案。
22．A poem written by an American poet is usually harder to understand than ________ by a Chinese poet.
A．that B．it
C．which D．one
答案与解析：D 一首由美国诗人写的诗往往比中国诗人写的难懂。one表示泛指，指代上文提到的同类事物A poem。
