一、句型转换（本题共12分，每小题2分。）
(A)将下列肯定句改为否定句：
1.She is from the south.
2.Mr.Smith spoke at the meeting yesterday.
3.Put the desk near the bookshelf
(B)就下列句中的划线部分提出问题：
1.The library opens at 8:30.
2.This is my sister's coat.
3.Edgar Snow was 22 when he first came to China in 1928.
