—Why does Mary look so worried today?
—I’m not sure, but she _____ a small accident driving here.
| A．must have | B．might have | C．must have had | D．might have had |
--I’m told that you are leaving for Shanghai. ----Who ____ so?
| A．says | B．said | C．has said | D．’s saying |
--I don't think you can manage it. ----That ____!
| A．will all depend on | B．will all depend | C．all depends | D．all depends on |
Is this the first time that you ___ late?
| A．have come | B．came | C．coming | D．come |
--You look so pale.What trouble you? ----I ___ my dead mother.
| A．though about | B．was thinking about | C．have thought about | D．am thinking about |
Pardon? I ___ quite catch you.
| A．didn’t | B．couldn’t | C．don’t | D．can’t |