Ответ:
1. Helen has been washing
2. My classmates have been writing
3. Sam has been driving
4. I have been looking for
5. Molly has been painting
6. The tourists have been doing
7. You have been working
8. The wind has been blowing
9. My grandfather has been collecting
10. Andy and Den have been discussing
1. Kevin has been fishing
2. Kim haven't been packing
3. You have been ironing
4. Alan hasn't been wearing
5. I haven't been walking
6. Monica and Sue have been painting
7. Mr. May has been reading
8. It hasn't been raining
9. My neighbours have been making
10. Brad has been frying