1.Half of the class ______ done most of the work .The left _

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1.Half of the class ______ done most of the work .The left ____rather difficuit.
A.have,is B.has,is C.have,are D.has,are
2.The factory has been_________for two years.
A.open B.to open C.opening D.opened

1 a class 是集体名词,和family等词的用法一样,可以指以一个集体,也可以指这个集体的成员.指集体的时候,谓语动词用单数,指集体成员的时候,谓语动词用复数.这个题里面,指的是班级的成员完成工作,所以谓语动词用复数.后面的the left 指的应该是the left work is difficult.
2 c open是短暂性动词,不能用于现在完成时态,这表示动作的持续,工厂还一直开着,所以用现在完成进行时.

1.Half of the class ______ done most of the work .The left _ Half of the class _____done most of the work.The left ______ Half of the class have done most of the work.The restis rath Half of the class _done most of the work.The left _rather di Half of the class have done most of the work 怎么翻译 Half of the class ______ most of the work. Some of the work_ Half of the class have done most of the work.这句话中为什么要用have half of the class( )most of the work.some of the work( )real Half of the class ___ most of the work,The rest ___ really d half the class 与half of the class的区别反义疑问句 Most of the food was left,______ _______?Most of the b The workers have done most of the work.The rest()(be)really