---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 |
The man ______ house I have stayed in for two months has some money trouble.
| A．whose | B．which | C．in whose | D．in which |
If you’re a poor driver, you should not_______ at night.
| A．to try driving | B．try to drive |
| C．to try to drive | D．try driving |
The snow is so deep. We can hardly get out of the house, ______?
| A．mustn’t we | B．must we | C．can’t we | D．can we |
He, along with his sister, ______ how serious the situation is.
| A．haven’t realized | B．hasn’t realized |
| C．don’t realize | D．didn’t realize |
—These things are not useful to anyone, are they?
—______. We can throw them away.
| A．Yes, they are | B．Yes, they aren’t |
| C．No, they aren’t | D．No, they are |