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。
