() Half of the class __ done most of the work.The left ___ rather difficult.A have;is B has;is C have;are D has;are

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() Half of the class __ done most of the work.The left ___ rather difficult.A have;is B has;is C have;are D has;are
() Half of the class __ done most of the work.The left ___ rather difficult.
A have;is B has;is C have;are D has;are

() Half of the class __ done most of the work.The left ___ rather difficult.A have;is B has;is C have;are D has;are
选A 第一个的主语是人 复数 第二个的主语是work 不可数 所以用is

A

D