At present ________ of the experiments ________done in labs after the new bui

题干

At present ________ of the experiments ________done in labs after the new building has been finished.

A．four fifth; is	B．four fifths; are
C．four fifth; are	D．four fifths; is

上一题下一题 0.64难度单项选择更新时间:2014-06-15 08:37:53

小学学科试题库

初中学科试题库

高中学科试题库