He did not attend the meeting yesterday. He______ill.
A: must be
B: must have been
C: should be
D: should have been
A: must be
B: must have been
C: should be
D: should have been
举一反三
- He fifty when I met him the first time. A: must be B: must have been C: should be D: should have been
- 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
- Where is John? - He _____ in the library. A: should be B: must be C: can be D: must have been
- 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