1) Правильные: cook, watch, clean
Неправильные остальные
2) 1.saw
2.met
3.helped
4. was
5. were not
3)They weren’t in Great Britain last year.
Kate didn’t get up at 7 o’clock yesterday.
I didn’t drink two cups...
We didn’t go to the park...
Sheila didn’t buy a new dress...