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He missed the train this morning_________ he got up late.
A. or B. if C. but D. because
He missed the train this morning ________ he got up late.
A. or
B. if
C. but
D. because
A．or
B．if
C．but
D．because
He missed the train this morning ________ he got up late．
A．or B．if C．but D．because