请用下面括号内所给的词或短语的适当形式完成下列句子。

1. Xi'an No.2 Subway ______(complete) in 2010.

2. I found a wallet this morning, and I'm trying to find its ______(own).

3. Tom will come back on the ______(twenty) of next month.

4. There are two ______(shelf) in my room where I put my books.

5. Who ______ this toy car ______(belong to)? I really want to know.

Windows中，激活快捷菜单的操作是（）

A.单击鼠标左键

B.移动鼠标

C.拖放鼠标

D.单击鼠标右键