题目内容

The classroom ________ by students every day.

A. cleans
B. cleaned
C. is cleaned
D. is cleaning

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It was the natural disaster, rather than human errors, that ________ for the death of so many innocent people.

A. are blamed
B. was to blame
C. was blamed
D. were to blame

Please don’t stand up in class until you ______.

A. were told to
B. are told
C. are told to
D. were told

Oral English exams _______ in China twice a year to give more chances to the students.

A. has held
B. will be held
C. will hold
D. has been held

When I got to his house, I found that the walls _____ .

A. are being painted
B. are painting
C. were being painted
D. were painting