—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

---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

---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

---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

---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．

---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

一How can we reduce CO₂ 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

（2010·海南省高三五校联考）30．---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

（2010·海南省高三五校联考）30．---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