Look! The students _____ the classroom.
A. cleaning B. are cleaning C. are clean   
B

試題分析：句意：看！學生們正在打掃教室。根據(jù)look可知正在看，此處用現(xiàn)在進行時be doing.故選B。
練習冊系列答案
相關習題

科目：初中英語 來源：不詳 題型：單選題

The terrorists（恐怖分子）in Xinjiang ______ last month.
A．a(chǎn)re caughtB．was caughtC．were caughtD．is caught

查看答案和解析>>

科目：初中英語 來源：不詳 題型：單選題

I first met Lisa three years ago. She ________ at a radio shop at the time. 
A．workedB．was workingC．has workedD．has been working

查看答案和解析>>

科目：初中英語 來源：不詳 題型：單選題

—Who        her father?
—He must        by that policeman.
A．saved; be savedB．saved; save
C．is saved; be savedD．save; be save

查看答案和解析>>

科目：初中英語 來源：不詳 題型：單選題

Mr. Wang is a teacher. He ______ in this school for 20 years.
A．has workedB．workedC．will workD．works

查看答案和解析>>

科目：初中英語 來源：不詳 題型：單選題

— I didn’t know you were friends with Mr. Smith.
— We ______ each other for6 years.
A．knewB．a(chǎn)re knownC．have knownD．will know

查看答案和解析>>

科目：初中英語 來源：不詳 題型：單選題

There are some trees near our school. They ________ last Monday.
A．waterB．wateredC．have wateredD．were watered

查看答案和解析>>

科目：初中英語 來源：不詳 題型：單選題

When did you buy these new CDs?
I     them for two days.
A. had  B. have bought  C. have had

查看答案和解析>>

科目：初中英語 來源：不詳 題型：單選題

I_______ my homework in my study the whole morning . I went nowhere.
A．doB．didC．was doingD．would do

查看答案和解析>>

同步練習冊答案