Dr Yuan makes______ possible______ one-third more of the crop in the same fields

题干

Dr Yuan makes______ possible______ one-third more of the crop in the same fields.

A．it; produce

B．it; producing

C．it; to produce

D．it; produced

上一题下一题 0.4难度单项选择更新时间:2012-08-14 11:13:02

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