—We are worried about Tom. Why hasn’t he come back?
—Don’t worry. He ______ in a traffic jam.
A.might be caught | B.may have been caught |
C.can have been caught | D.should have been caught |
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—We are worried about Tom. Why hasn’t he come back?
—Don’t worry. He ______ in a traffic jam.
A.might be caught | B.may have been caught |
C.can have been caught | D.should have been caught |