免费领取学霸笔记 每日限100份
·What's the matter?
·I'll help to clean up the city parks
·Could you please clean your room?
·Why don't you talk to your parents?
·What were you doing when the rainstorm came
·An old man tried to move the mountains
·What's the highest moutain in the world
·Have you read treasure island yet
·Have you ever been to a museum
·I've had this bike for three years
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