— There'ssomeone knocking on the door. Who _____it be?
— It must be Mary. She promised to be here at 8：00.

A．mustB．needC．shallD．Can

D

解析試題分析：句意：--有人在敲門�？赡軙�(huì)是誰(shuí)呢？--一定是Mary。她答應(yīng)八點(diǎn)鐘到這里。A. must一定，表主觀肯定推測(cè)；B. need需要；C. shall將會(huì)是；D. can可能，表示懷疑、猜測(cè)、驚異（主要用于否定句或疑問句中）。故選D。
考點(diǎn): 考查情態(tài)動(dòng)詞的用法。

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來源： 題型：單選題

--- You needn’t take an umbrella. It isn’t going to rain.
--- Well, I don’t know. It ______do. 

A．might B．need C．would D．should 

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：單選題

Doctor Wang      at seven o’clock for the conference, but she didn’t turn up.

A．should have arrived B．should arrive
C．should be arrived D．should be arriving

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：單選題

I don’t know what happened to my pet. It just ________ eat whatever I feed her.

A．don’tB．won’tC．can’tD．couldn’t

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：單選題

According to the newly-made traffic regulation, whoever drives through red light      be fined at least 200 dollars．

A．shall B．may C．would D．should

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：單選題

Harry is feeling uncomfortable. He _____ too much at the party last night.

A．could drink B．should drink
C．would have drunk D．must have drunk

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：單選題

It was a fine day yesterday. I ________ have taken my raincoat with me.

A．couldn’t B．needn’t C．shouldn’t D．mustn’t 

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：單選題

－These peaches really juicy.
－They ____ be! Just see the price, $3,99 a pound. Very expensive, aren’t they!

A．would B．could C．might D．should

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：單選題

It was so dark outside that the little child ________ go out by himself.

A．dare not toB．daredC．daresD．didn’t dare to

查看答案和解析>>

同步練習(xí)冊(cè)答案