—I wonder why Suzan 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 |
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—I wonder why Suzan 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 |