题目内容
— Why don' the doctors stop ________ lunch?
— Because they are busy ________ a patient.
A.to have; to save B.having: saving C.to have; saving D.having; to save
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题目内容
— Why don' the doctors stop ________ lunch?
— Because they are busy ________ a patient.
A.to have; to save B.having: saving C.to have; saving D.having; to save