Since nobody gave him any help, he have done the research on his own.
A. can
B. must
C. would
D. Need
Since nobody gave him any help, hehave done the research on his own.A. canB. mustC. wouldD
答案:2 悬赏:0 手机版
解决时间 2021-12-20 13:47
- 提问者网友：像風在裏
- 2021-12-19 16:03
最佳答案
- 五星知识达人网友：酒者煙囻
- 2021-12-19 16:32
A. can(答案→)B. mustC. wouldD. Need解析：考查情态动词和虚拟语气。can have done sth可能已经做了某事；must have done sth一定已经做了某事；would have done表示与过去的事实相反；need have done sth本来需要做某事。句意“因为没有人给他任何的帮助，他一定是自己完成的那项，研究。”根据，句意可知，表示的是肯定的推测，用must，故选B。【考点定位】情态动词和虚拟语气。
全部回答
- 1楼网友：逃夭
- 2021-12-19 17:01
我也是这个答案
我要举报
如以上回答内容为低俗、色情、不良、暴力、侵权、涉及违法等信息，可以点下面链接进行举报！
点此我要举报以上问答信息
大家都在看
推荐资讯