He must have had an accident, or he ______ himself（ ）.
A: had to be
B: should be
C: would be
D: would have been
A: had to be
B: should be
C: would be
D: would have been
举一反三
- He must have had an accident, or he ________ here then. A: would be B: had been C: should have been D: could be
- He must have had an accident, or he ______ here then. A: would have been B: had been C: should be D: could be
- He must have had an accident, or he ______ then. A: would have been here B: had to be here C: should be here D: D. would be here
- He must have had an accident, or he ______ here then. A: should be B: B. would be C: could have been D: D. would have been
- He must have had an accident, or he_____ here then. A: were B: would be C: would have been D: had been