The graduating students are busy _______ material for their reports.A．collect　B．_刷题宝

题干

The graduating students are busy _______ material for their reports.

A．collect　

B．to collect　

C．collected　

D．collecting

上一题下一题 0.85难度单项选择更新时间:2010-06-26 10:28:51

答案(点此获取答案解析）

小学学科试题库

初中学科试题库

高中学科试题库