5. (A). You may overlook the errors.

　　(B). Check your work carefully.

　　(C). It’s too fine to have any flaws.

　　(D). Look over the shirts.

　　6. (A). The janitor locked the door after everyone else was gone.

　　(B). The door on the left was locked by the janitor.

　　(C). It took two people to lock the door.

　　(D). The Janitor and another person were left in the building.

　　答案与音频文本：

　　B A

　　5. Be sure to look over your papers to find any error.

　　6. The last person left and the janitor locked the door.