- Where is Jack? I can’t find him anywhere.
    - He ______ his homework upstairs.
    A. might have done       B. must have done        C. might be doing      D. must do

 My parents never remember my telephone number, and they always ______ look it up.
   A. must              B. can            C. should               D. have to

 She ______ into the thick forest alone on such a dark night.
   A. dares not go                               B. dares not to go
   C. dare not to go                             D. doesn’t dare to go

 I’ve decided to take the job and I ______ change my mind.
   A. mustn’t            B. can’t                 C. won’t              D. may not

 Jack, you ______ play with the knife; you ______ hurt yourself.
   A. won’t; can’t          B. mustn’t; may           C. shouldn’t; must         D. can’t; should

 When the old man was alive, he ______ sit for hours at the door.
   A. would              B. could                  C. must               D. might

 - ______ it be Li Ping who broke the glass?
   - No. It ______ be Wang Hai who did it.
   A. Could; may         B. Can; can               C. May; must           D. Can; must

 - Is John coming by air?
   - He should, but ______ not. He likes taking trains.
   A. must                B. can                    C. need                 D. may

 There was plenty of time; she ______.
   A. mustn’t have hurried                       B. needn’t have hurried
   C. may not have hurried                       D. wouldn’t have hurried

 You can’t imagine that a well-behaved gentleman ______ be so rude to a lady.
   A. might                B. need                     C. should                  D. would