a : i`ve been waiting more than half an hour. how often does the bus run?
b: That`s strange. It usually runs _____________
(a) all ten minutes
(b) every ten minutes
(c) all ten minute
(d) every ten minute
여기서 답 b 던데 every 다음에 단수 오는거 아닌가요?
이경우엔 예왼가;;
b: That`s strange. It usually runs _____________
(a) all ten minutes
(b) every ten minutes
(c) all ten minute
(d) every ten minute
여기서 답 b 던데 every 다음에 단수 오는거 아닌가요?
이경우엔 예왼가;;
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