---Must I learn the new words in heart today?---No, you _______. You ______ do it tomorrow.
| A．needn’t; may | B．mustn’t; must | C．mustn’t; may | D．needn’t; mustn’t |
You_______ play with the knife. You ______ hurt yourself.
| A．mustn’t; may | B．mustn’t; must | C．shouldn’t; must | D．can’t; should |
Workers can’t be made ________ for twelve hours a day.
| A．work | B．to work | C．working | D．worked |
---Did you see who the driver was?
---No, the car ran so fast _____ I couldn’t get a good look at his face.
| A．that | B．which | C．as | D．after |
--Wow, so many new houses! I can’t believe that. It used to be a poor village.
--- Yes,_________ has changed here.
| A．Nothing | B．something | C．Everything | D．Anything |
---Is your father a teacher?
---well, he _______.
| A．used to | B．was used to | C．used to be | D．is used to be |