It is on September 1st students go back to school every year.A．whenB．whoC．tha_刷题宝

题干

It is on September 1^st students go back to school every year.

A．when

B．who

C．that

D．what

上一题下一题 0.64难度单项选择更新时间:2012-12-24 08:06:17

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