We have brought in a good grain harvest for three years.A. on purposeB. on endC. on duty D

We have brought in a good grain harvest for three years .
A. on purpose
B. on end
C. on duty
D. on watch

A. on purpose(答案→)B. on endC. on duty D. on watch解析：词义辨析题 我们连续三年谷物丰收。 A. on purpose 故意 B. on end 连续 C. on duty值日 D. on watch 值班 根据句意选B

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