Lai wants to go home because he feels sick

VIII.

1) If they ride bicycle carefully, they won't cause acident

3. Remember to turn off the faucets before going out

4. Na suggested visiting Mary's parent more often

V.

1. Lai wants to go home because of sickness

2. How about turning off the lights in the rooms when no one is in?

VI.

1 - rivers

2 pollute

3 trees

4 forests

5 save