Question

Answer 1

1. I have once visited the Stone Forest before

2. Do you have any difficulty in understanding him?

3. If you didn't do any exercise, you would put on weight

4. Mike invited me to come a picnic with them

Answer 2

1/ I have once visited the Stone Forest before.
2/ Do you have any difficulty understanding him?
3/ If you didn't do any exercise, you would put on weight.
4/ Mike invited me to come a picnic with them.