题目

看图写话 （1） ought to （2） when （3） a short distance （4） use...to... （5） reach 380km 答案： You ought to plant more trees. You should turn off the light when you leave the room. You can ride a bike when you are traveling for a short distance. We can use wind to produce power. The CRH train reaches a top speed of 380km per hour.

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