He is an hour late by now．He last night．
#87971
A
must stay up
B
should stay up
C
must have stayed up
D
should have stayed up
推荐题目
It was playing computer games that cost the boy plenty of time he ____ doing his lessons.
#89110
A
might have spent
B
ought to have spent
C
must have spent
D
could have spent
They were abroad during the months when we were carrying out the investigation, or they _____ to our help.
#86376
A
would have come
B
could come
C
have come
D
had come