---Listen, Mum. I heard the footsteps. Is it Dad?
---It ___ be him. He’s gone to Beijing on business this morning.
| A．can’t | B．mustn’t | C．needn’t | D．shouldn’t |
—What do cows eat? —They eat__________ grass.
| A．most | B．mostly | C．almost | D．main |
Black broke his leg. He has just had_______ X-ray examination. _______ doctor said he needed _______ operation.
| A．a; The; an | B．a; A; an | C．an; A; an | D．an; The; an |
Mary likes ___________, but I ________listening to pop music.
| A．dance; enjoy | B．dancing; enjoy | C．dance; enjoys | D．dancing; enjoys |
- Please ______ your homework to school tomorrow.
| A．take | B．have | C．bring | D．let |
--Can I play computer now? --No, you ______. You _____do your homework first.
| A．can; can | B．can’t; must | C．can’t; can | D．must; can |