( ) Half of the class done most of the work. The left rather difficult. A. have; is B. has; is——青夏教育精英家教网—

摘要：( ) 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

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