1. Peter had such a fierce dog no one dared to go near his house.

　　2. Have you ever been absent from class you were sick?

　　3. Fifty copies of the book were bought each student in the class could have one.

　　4. it's raining, you'd better stay indoors.

　　5. Tom hid the toy his little brother should see it.

　　6. Mary was interested in the story she didn't notice it was time for class.