一、下面每句都有一个标点符号错误，该用标点处未用标点或标点符号用错，改正错误或补写标点。

1.Shall I bring in the letters of recommendation,as well as my resume?

2.Don’t you think it would be a good idea to call Mr.Taylor!

3.The delegation will arrive on January 5.2005.

4.I heard Mr.Lee close the door,But I didn’t hear him open it.

5.Because,he has worked late every day this week he is determined to finish it early on Friday.

答：1.recommendation,→recommendation 

2.Taylor!→Taylor?

3.January .→January 

4.door,→door.

5.Because,→Because