1. has been listening2. was opening / found / thought / had lost
3. has been teaching
4. 've had / started / have you noticed?
5. are you doing?
6. are the children / are playing / bought
7. forget
8. hasn't begun yet / are talking
9. have you been waiting?
10. have had
11. have you learnt , did you learn ( nu sunt 100% sigura ) / am sorry / haven't prepared / was / didn't know / 'll prepare / don't / 'll get