---How can we reduce CO2 in our home?
---It’s easy．______off your TV or computers when you’re not using them, and you’ll greatly reduce it．
| A．Turn | B．To turn | C．Turning | D．Turned |
— I'm wondering why the visitors chose to stay with the host fa
mily．
— _____ the real local life．
| A．Experience | B．Experiencing |
| C．Having experienced | D．To experience |
—I’d like to buy the kind of cloth which ____ easily．
—Will this one ____?
| A．washes; work | B．is washed; work |
| C．washes; do | D．is washed; do |
____mountain village you see today is ____ fast-developing and energetic one, quite different from what it used to be．
| A．The; a | B．A; the | C．不填; a | D．The; 不填 |
____ has never occurred to us that the accident can do so great harm to the family．
| A．That | B．It | C．This | D．One |
It is reported that the water in the river is becoming worse and worse, the river around the city ____ with waste from factories．
| A．polluting | B．polluted |
| C．having polluted | D．to pollute |