6．The strategies that he came up with worked out fine. 几米想出的这个办法很有效。
7．He did a radio interview. 他接受了电台的采访。
8．We need to come up with a plan. 我们需要指定一个计划。
9．You could help clean up the city parks. 你可以帮助打扫城市公园。
10．He now has sixteen bikes to fix up and give away to children who don’t have bikes. 他现在有16辆要修理的自行车，并准备把这些修好的自行车赠送给那些没有自行车的孩子。 Unit 9
When was the car invented？小汽车是什么时候被发明的？
When were electric slippers invented？电子拖鞋是什么时候被发明的？ Who were they invented by？他们是被谁发明的？
What are they used for？他们被用来做什么？
Unit 10
By the time she got up，her brother had already gone into the bathroom 在她起床之前，她的哥哥已经进入到浴室里去了。
By the time she went outside，the bus had already left
在她出来之前，公共汽车已经离开了。
By the time she got to class，the teacher had already started teaching 在她到达班级之前，老师已经开始讲课了。
When she got to school，she realized she had left her backpack at home 在她到达学校之前，她已经意识到她的背包落在家里了。 Unit 11
Could you please tell me where the rest-rooms are？
你能告诉我厕所在哪吗？
Could you tell me how to get to the post office？
你能告诉我怎样去邮局吗？
Could you please tell me where I can get a dictionary？
你能告诉我在哪能买到字典吗？
Can you tell me where center street is？
你能告诉我中央大街在哪吗？
Do you know if there are any public restrooms around here？
你知道这附近是否有公共厕所吗？