一How can we reduce C0₂ in our home?
一It’s easy．________ off your TV or computers when you’re not using
them and you’ll greatly reduce it．

一How can we reduce C0₂ in our home?

一It’s easy．________ off your TV or computers when you’re not using

them and you’ll greatly reduce it．

一How can we reduce C0₂ in our home?
一It’s easy．________ off your TV or computers when you’re not using them and you’ll greatly reduce it．

1. A.
   Turn
2. B.
   To turn
3. C.
   Turning
4. D.
   Turned

一How can we reduce C0₂ in our home?

一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