—— I usually go there by train.
—— Why not＿＿＿＿＿by boat for a change?
| A．to try going | B．trying to go | C．to try and go | D．try going |
—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 |