She’s already two hours late. What ______ to her?


  1. A.
    can have happened
  2. B.
    may have happened
  3. C.
    should have happened
  4. D.
    must happen
A
can表推測(cè),只用于否定句和疑問(wèn)句中。
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: 題型:單選題

Mistakes will happen. Accept _________ and learn from ________


  1. A.
    it; them
  2. B.
    them; it
  3. C.
    it; it
  4. D.
    them; them

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:單選題

I heard that some patients who had undergone laser eye surgery experienced sudden losses of vision, ______?


  1. A.
    didn’t I
  2. B.
    hadn’t they
  3. C.
    didn’t they
  4. D.
    isn’t it

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:單選題

I hope that my father will quit smoking because I want him to live__________ my grandpa does


  1. A.
    as a long and healthy life as
  2. B.
    as long and healthy a life as
  3. C.
    such long and healthy a life as
  4. D.
    so long and healthy a life as

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:單選題

______I used to go mountain—climbing every summer .


  1. A.
    at a time
  2. B.
    at one time
  3. C.
    At times
  4. D.
    At the same time

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:單選題

I told him that if painting was important for him he would live on bread in order to ______ .


  1. A.
    succeed
  2. B.
    success
  3. C.
    succeeding
  4. D.
    to success

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:單選題

The question _____ at tomorrow’s meeting is of great importance.


  1. A.
    to discuss
  2. B.
    being discussed
  3. C.
    to be discussed
  4. D.
    discussed

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:單選題

The boy was observed __________ basketball at eight o’clock yesterday.


  1. A.
    playing
  2. B.
    play
  3. C.
    to play
  4. D.
    having played

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:單選題

However busy we are, we need to take exercise. Not only___________us keep healthy, it also stops us getting fat.


  1. A.
    it helps
  2. B.
    helps it
  3. C.
    it does help
  4. D.
    does it help

查看答案和解析>>

同步練習(xí)冊(cè)答案