when, where, how, what, if, because, so, but, and, while

1. Please tell me ______ I can find the way to DongFang Building.

2. You will see many stars in the sky______ you come out at a fine night.

3. I want to ask the teacher ______ we will take a day off.

4. I am mad at him ______ he is playing the stereo too loud.

5.______ he was stealing the girl’s purse, I saw him.