在下列各句的空格内填上一个适当的完整的单词，该词的首字母已给出。

1．M             is my favorite day of the week because we have a computer lesson in the afternoon.

2．Please don't w            . Everything will be better soon.

3．It's time to go to bed. You'd better finish your homework q            .

4．— What do you think Peter wants to be when he g             up ?

     — A doctor, I guess.

5．The Changjiang River is one of the l             rivers in the world.

热处理工艺一般经过（）个阶段。

A.二；

B.三；

C.四；

D.五。