---How can we reduce CO2 in our home? ---It’s easy．off your TV or computers when you’re no

问题补充：

---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

答案：

(答案→)A. Turn

B. To turn

C. Turning

D. Turned

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