China is trying to find ways to take care of the children parents have left their homes to work in cities.
| A．that | B．who | C．whose | D．which |
The supermarket provides customers _____ plastic bags for free.
| A．on | B．with | C．of | D．in |
—Is it interesting to play computer games?
—Yes, _____ you are interested in playing computer games, you’ll have trouble giving it up.
| A．once | B．twice | C．as | D．as soon as |
She has _____ this car for nearly ten years.
| A．buy | B．bought | C．have | D．had |
—Where are Maria and Kangkang?
—They _____ England.
| A．have been to | B．are away | C．have gone to | D．had been in |
—What has happened in your hometown?
— Great changes _____ in my hometown recently.
| A．have been taken place | B．have taken place |
| C．have been happened | D．was happened |