Someone must have turned on the light without your notice.　　

查看本题答案

包含此试题的试卷

must have drunk should drink have drunk has drunk

haven’t they hasn’t he don’t they didn’t he

must have missed might have missed would have missed could have missed

must use uses must have been using must be using

don’t didn’t haven’t mustn’t

had gone; must have turned went; must have turned had gone; should have turned went; should have turned

mustn’t has to must doesn’t have to

had gone;must have turned went;must turn have gone;would have turned went;should have turned

mustn’t they haven’t they didn’t they have they

might can must should

may take may have been taken away must have taken away needn’t have been taken away

might; turned to should; turned up could; turned in must; turned on

must use uses must have been using must be using

went; should have turned have gone; must turn went; would have turned had gone; must have turned

had gone; must have turned went; must turn have gone; would have turned went; should have turned

should wait must have waited should have waited must wait

should have bothered couldn't have bothered needn't have bothered must have bothered

should have bothered couldn’t have bothered needn’t have bothered must have bothered

don’t didn’t haven’t mustn’t

could have caught should have caught must catch would have caught