非谓语动词1.She can’t stand _waiting.a.to keep b.to be kept c.kee

非谓语动词
1.She can’t stand _waiting.a.to keep b.to be kept c.keeping d.being kept
2.If nobody answers the door bell ,you may try _ the back door.a.to knock b.to knock at c.knocking d.knocking at
3.Man was ,is and always will be trying _his living conditions.a.improve b.to improve c.improving d.having improved
4.John doesnt remember _you that.a.to promise b.to have promised c.promised d.having promised