1. I put the letter in an envelope, __________ (attach) a stamp and mailed it.

2. She __________ (pretend) not to be looking in my way when I looked at her.

3. 2012 saw the Chinese writer Mo Yan win the Nobel Prize in Literature, __________ (earn) an international reputation.

4. __________ (form) a good habit is not so difficult.

5. Suddenly, many coins __________ (roll) across the floor.

6. The price they offered was very __________ (attract) and that was why we decided to buy the car.