He used to teach in that university and I _________ ride past it on my way to work.

A. would       B. could       C. should       D. might

 On Sundays when I was a child, Father and I _______ get up early and go fishing.

A. could       B. would       C. might       D. should

 The thief ________ in from the kitchen window as the door was closed.

A. may climb                        B. must have climbed

C. could have climbed               D. should have climbed

 —Hurry up, Michael! It’s ten to three.

—Goodness me! The class_______. I’ll be late again.

A. must begin      B. may begin      C. should have begun       D. must have begun

 It was playing computer games that cost the boy a lot of time that he __________ doing his lessons.

A. might have spent             B. ought to have spent

C. must have spent                  D. could have spent

 Professor Smith, many students want to see you. __________ they wait here or outside?

A. Do       B. Shall       C. Will       D. Would

 Better go to see my sick colleague right now, ________I?

A. hadn’t       B. didn’t       C. don’t       D. won’t

 I promised to get there before 5 o’clock, but now the rain is pouring down. They ______ for me impatiently.

A. may wait       B. ought to wait       C. could wait       D. must be waiting

 She’s already an hour late, What _____to her?

A can have happened       B may happen

C should have happened       D may have happened

 As it tuned out to be a small house party, we ____ so formally.

A. needn’t dress up       B. couldn’t have dressed up

C. didn’t need dress up       D. needn’t have dressed up