Lily and I are good friends, often help each other.
| A．You | B．We | C．They | D．She |
—How many timesCarlto the Great Wall?
—Only once.
| A．does ;go | B．did; go |
| C．has; gone | D．has; been |
The traffic signs warn peopleafter drinking.
| A．to drive | B．not to drive |
| C．driving | D．don’t drive |
A smilenothing, but gives much.
| A．costs | B．spends | C．cost | D．spend |
They heard the party wasbecause of exam.
| A．put on | B．put up | C．put off | D．put down |
Youreturn the book now. You can keep it until next week if you like.
| A．have to | B．can’t | C．mustn’t | D．needn’t |