My father is usually on duty in his office every few daysA.the,aB./, /C./,aD.a,
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My father is usually on _______ duty in his office every _______ few days
A.the；a
B./； /
C./；a
D.a； /
试题答案
B
考查冠词的用法。句意“我爸爸每几天就在办公室值班。”on duty“在值班”；every few days“每几天”。every“每......”，后不与冠词连用。故选B。