1. Choose the correct answer.
1. Her friend burst into (tear/ tears) when she heard the bad news.
2. Paul and Jane shake (hand/ hands) and become friends again.
3. She can't see what the teacher writes on the blackboard without her contact (len/ lens) 4. If you want to get well, you should take the doctor's (advice/ advices).
5. Mary never does her (homework/ homeworks) (luggage/ luggages).
6. Johnny has lost his (luggage/luggages)
7. The children sat on the (grass/ grasses).​