题目内容

I ______ dinner when a quarrel broke out among my son and daughter.

A. preparing
B. am preparing
C. was preparing
D. prepared

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In fact, more and more people ______ to live a greener, healthier and more environmentally friendly "green life".

A. chose
B. choose
C. are choosing
D. have chosen

Food supplies in the flood-stricken area _______. We must act immediately before there's none left.

A. have run out
B. are running out
C. have been run out
D. are being run out

班级人际关系

非正式群体区别正式群体的特点主要包括

A. 形成方式
B. 存在状态
C. 组织规范
D. 成员组成