Ответ:

2. The baby started crying when I ledt the room. (c)

3. Running long distances is very tiring (a)

4. Speaking foreign languages is useful for everyone (g)

5. They went skiing last winter (d)

6. Eating lots of sugar is bad for your teeth (b)

7. Tom doesn't like washing the dishes (f)

11. 2. He hates playing cards

3. She is too excited to sleep

4. You must get up early in the morning

5. I regret spending so much money last weekend

6. They go running every Tuesday evening

7. I saw Helen washing the dishes

8. I started learning French  two years ago

9. He was very pleased to see her again

10. The dentist  advised him to stop eating sweets