The engineers must have worked out the design by the end of last week，_______？
A．mustn’t theyB．hadn’t they ?
C．haven’t theyD．didn’t they?
B?
時間狀語by the end of last week表示的是過去的過去，所以該填過去完成時。
練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：單選題

—Where is Jack?I can’t find him anywhere.?
—He__________ his homework upstairs.?
A．might have doneB．must have done?
C．must be doingD．must do?

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

____ tennis every day ?
A．Did you used to playingB．Did you use to play
C．Use you to play D．Used you play

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

He _______ more visits to his parents.He has been regretting not doing so since they passed away.
A．should pay?
B．would pay?
C．should have paid?
D．would have paid?

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

—Daddy, would you buy me an MP3 player if I do well in the first city-wide examination?
—I _______, I promise.?
A．wouldB．shall?
C．willD．do?

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

His illness was too serious, otherwise he _______ saved.?
A．could be
B．couldn’t have been?
C．could have?
D．could have been?

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Her suggestion that the first six units of the book _______ wasn’t paid much attention to.?
A．be reviewedB．to be reviewed　?
C．shall be reviewedD．a(chǎn)re reviewed?

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

--- I’m sorry. I ___________ at you the other day.
--- Forget it. I was a bit out of control myself.
A．shouldn’t shoutB．shouldn’t have shouted
C．mustn’t shoutD．mustn’t have shouted

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

The traffic light is red, so I＿＿＿＿＿＿stop my car.
A．mustB．have toC．canD．mustn’t

查看答案和解析>>

同步練習(xí)冊答案