Online shopping , when properly ____, can save a lot of time , money and energy.
A．doneB．is doneC．having doneD．doing
A
考查狀語從句的省略。此題when后面省略了it is,句意：網(wǎng)上購物當適當使用的話，會節(jié)省許多時間，金錢和精力。故選A。
練習冊系列答案
相關(guān)習題

科目：高中英語 來源：不詳 題型：單選題

Under no circumstances _________ lend Paul any money.
A．you shouldB．you shouldn’tC．should youD．should you not

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

---Mr. Smith must know a lot about Chinese history.   
---________. He has studied it for years.
A．So he doesB．So does heC．So he mustD．Yes, he must

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

---- Are you going to the cinema this evening?
---- If you don’t go, __________________.
A．neither do IB．Nor will IC．So will ID．So do I

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Bill wasn’t happy about the delay of the report by Jason, and ________.
A．I was neitherB．neither was IC．I was eitherD．either was I

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

______ in March,  that so many people had on their light wears.
A．So hot became the weatherB．So became the hot weather
C．The hot weather became soD．So hot did the weather become

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

---I was wondering if we could go skiing on the weekend.---     good.
A．SoundsB．SoundedC．SoundingD．Sound

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

________ entered the classroom _________ the bell rang.
A．We hardly had, beforeB．Hardly had we, when
C．Hardly had we, thanD．Hardly did we, when

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Not until the taxi disappeared in the distance     her handbag was gone.
A．Tina had foundB．had Tina foundC．did Tina findD．Tina found

查看答案和解析>>

同步練習冊答案