—It's dangerous to swim in this river.
—Yes，you are right.The government has ______ people not to swim in it.
| A．trained | B．warned | C．led | D．Encouraged |
Bill wants ____________ vegetable salad.
| A．have | B．to have | C．has | D．to has |
_________ Tom ___________ a baseball?
| A．Do; have | B．Does; have |
| C．Does; has | D．do; has |
--- Helen, what’re those on the table?
--- They are an ___________ and three __________ .
| A．pear; strawberry | B．apple; strawberry. |
| C．apple; strawberries | D．pears; strawberries. |
--- Do you have a new watch?
--- No, I _________ .
| A．do | B．don’t |
| C．does | D．doesn’t |
---Where _____my books?
--- _____ on the bed.
| A．is; It’s | B．is; They’re |
| C．are; It’s | D．are; They’re |