He looks tired. He ______ a sleepless night.
A: must have been
B: must have had
C: must be
D: must have
A: must have been
B: must have had
C: must be
D: must have
举一反三
- I would have gone with you，but I _______too tired． A: was B: had been C: must be D: must have been
- Since the ground is white, it ____ last night. A: had snowed B: must have snowed C: must be snowing D: must have been snowing
- Mike looks so sleepy in the class; he ______ up last night. A: must stay B: should have stayedC. must have stayed D. is sure to stay
- Had it rained last night, the road _____ wet now. A: would be B: must be C: would have been D: must have been
- He must have had an accident, or he ______ himself（ ）. A: had to be B: should be C: would be D: would have been