The door is open but nobody is in. Mary______have forgotten to lock the door.
A. should B. must
C. would D. could
—Sometimes I am even sleepy in class.
—It’s terrible. You _____ as well go to bed earlier.
A. should B. will
C. might D. can
— Lucy looks so upset. She ______ the driving test.
— It is the second time that she has failed in the test.
A. can’t pass B. mustn’t pass
C. can’t have passed D. mustn’t have passed
It might have saved me some trouble ______ the schedule.
A. did I know B. have I known
C. do I know D. had I known
—Sorry, Mum! I failed the job interview again.
—Oh, it's too bad. You have made full preparations.
A. must B. can
C. would D. should
Ellen is a fantastic dancer. I wish I as well as her.
A. dance B. will dance
C. had danced D. danced
