She ______ on her way to school．I just phoned her home and no one answered me．
A: should be
B: must be
C: might have been
D: could be
A: should be
B: must be
C: might have been
D: could be
举一反三
- I told your friend how to get to the hotel, but perhaps I _______ have driven her here. A: could B: must C: might D: should
- Now that she is sick with cold, I feel I ______ have stopped her from going out in the rain, A: could B: might C: must D: ought to
- They ____ well have misunderstood me. A: might B: must C: should D: could
- She __________ a good salary in an office job instead of staying at home, but she decided not to work for the sake of her children. A: must make B: would make C: should have made D: could have made
- She _______ fifty or so when I first met her at a conference. A: had been B: must be C: has been D: must have been