问题
选择题
23. _______ the plane have taken off on time?
--- I’m afraid not. The fog was too thick then.
A．Would
B．Should
C．Can
D．Must
答案
C
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23. _______ the plane have taken off on time?
--- I’m afraid not. The fog was too thick then.
A．Would
B．Should
C．Can
D．Must
C