17/ Keeping the environment clean is very important It is…………………………………………………………………………………... 18/ ‘You should turn off the light before going out” Mrs Lan said Mrs Lan suggested………………………………………………………………….. 19/ Why don’t you plant some trees around your house to get more fresh air? How about……………………………………………………………………………

17. Keeping the environment clean is very important.

=> It is very important to keep the environment clean.

18."You should turn off the lights before going out". Mrs. Lan said.

=> Mrs. Lansuggested turning off the lights before going out.

19. Why don’t you plant some trees around your house to get more fresh air?

=>How about planting some trees around your house to get more fresh air?

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