_____he have had an accident 此处用MUST,还是用COULD?为什么COULD

_____he have had an accident 此处用MUST,还是用COULD?为什么COULD _____he had passed the exam surprised everyone I have had an early night I an have some had 改成现在完成时 i have had an X-rey为什么have后面还要用had呢?i have an X-rey不行吗? Have you had an apple 是什么时态Sam hasn't had an apple是什么时态 Have you ever had an X ray?请回答 have you ever had an X -ray?如何翻译? I ( )an English class yesterday填had、have、has哪一个? sally had to have an operation《改为反义疑问句 》 [ ]an English lesson yesterday.A.went B.had C.have we could have had it an 是哪首歌里的 情态动词的题 就一道 _____he have been chosen as captain of our school football team -_____he have been chosen as captain of our school football team -Yes ,he _____.Can't you see he's wearing an armband A.can ;can B.Must ;must have C.Must ;mu we ( ) our breakfast when an old man came came to the doorA.just have had B.just had C.have just had D.had just had he must have gone to Japan,_____he?he must have been to Japan,_____he?he must have gone to Japan last week,_____he?he must have been to Japan last week,_____he? should have had和must have hadHenry was deported for having an eapired visa.He ___ his visa renewed.A:should have had B:must have had C:might have had D:would have had这句话怎么翻译? the little boy thought hard,then he-----ideaa.have a b.has an c.had a d.had an have had