He knows it is high time that he ________ at once.
A．quits smokingB．quitted smoking
C．should quit to smokeD．quitted to smoke
B
本題考查虛擬語(yǔ)氣及動(dòng)詞用法。it is high time that + 主語(yǔ) + 過(guò)去時(shí)態(tài)/should + v原形；quit doing 放棄做。故選B。
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

I have made greater progress in English, and my teacher inspired me to keep it     .
A．a(chǎn)wayB．offC．backD．up

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

.Some women 　　　　a good salary in a job instead of staying home，but they decided not
to work for the sake of the family．
A．must make B．should have madeC．would makeD．could have made

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

Despite the fact that his scores were good, they were hardly as excellent as a student with his intelligence          .
A．a(chǎn)chieved B．had achieved
C．would achieveD．should have achieved

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

It was playing computer games that cost the boy plenty of time that he ______ spent doing his lessons.
A．might haveB．should
C．ought to haveD．could

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

Students  ______ remain in their seats until all the exam papers have been collected.
A．mustB．shallC．mayD．can

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

Helen _______ it if she doesn’t want to.
A．doesn’t need doB．need not to doC．needs not to doD．need not do

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

The WTO urged that all the countries ________ measures to prevent swine flu spreading.
A．takeB．must takeC．a(chǎn)re to takeD．took

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：單選題

—Who did it?
—      .you ask?It was Joe,of course.
A．May B．Must C．Should D．Need

查看答案和解析>>

同步練習(xí)冊(cè)答案