问题
选择题
—I wonder why Sara looks worried today.
—I'm not sure，but she a small accident driving here.
A．could have
B．might have
C．might have had
D．must have had
答案
答案：C
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—I wonder why Sara looks worried today.
—I'm not sure，but she a small accident driving here.
A．could have
B．might have
C．might have had
D．must have had
答案：C