问题
选择题
----Why isn’t Cathy here yet?
--- She _________ to be picked up at the station.
A.could wait
B.must wait
C.might be waiting
D.can be waiting
答案
答案:C
----Why isn’t Cathy here yet?
--- She _________ to be picked up at the station.
A.could wait
B.must wait
C.might be waiting
D.can be waiting
答案:C