Not until recently _______the development of tourist-related activities in the rural areas.
A. they had encouraged B. had they encouraged
C. did they encourage D. they encouraged
In those days, our ________ concern was to provide people who were stopped by the snowstorm with food and health care.
A. permanent B. precise
C. privileged D. primary
Never shall I forget that poem and the inspiration _________provided for my first novel.
A. which B. that
C. it D. what
It is so good a habit to instruct children to lay things _______ they belong when they are young.
A. to which B. that
C. in which D. where
假设你是李明，暑假参加了为期两周的美国夏令营活动。在这两周里，你住在Smith夫妇家中，他们为你提供了吃、住、行及旅游方面的帮助。请写一封电子邮件感谢他们。内容须包括以下要点：
1．已安全回到中国。
2．感谢Smith夫妇的帮助。
注意：
1．词数：100个左右；
2．开头和结尾均已写好，不计入总词数。
Dear Mr and Mrs Smith，
How time flies！___________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
________________________________________________________________________
I will cherish the merry memories for the rest of my life. I hope we can keep in touch.
Yours，
Li Ming
假设英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处，每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号(∧)，并在其下面写上该加的词。
删除：把多余的词用斜线(\)划掉。
修改：在错的词下画一横线，并在该词下面写出修改后的词。
注意：1.每处错误及其修改均仅限一词；
2．只允许修改10处，多者(从第11处起)不计分。
This morning I go to the shop to change the coat I bought yesterday. But the salesgirl treated me very cold. At the first, she said the coat wasn't selling in the shop, and then she said I had made it dirty. She gave me several different excuse and refused change the coat. So I got angry and argued with him. Just then the manager turned up. He asked that was the matter. After I told him the whole story, he said sorry to me but exchanged the coat for me. Satisfying, I said goodbye to them and took the new coat home.
