Ответ:

ex.1    1. walking 2. to send 3. to do/doing 4. playing 5. reading  6. to drink

ex.2   1. coming, pause, look, knock    2. stay, to take, promise

3. answering, ring 4. listening, hearing 5. go, studying, take, phone 6. listening,  not to show, keeping, going

ex.3   1. to establish 2. seeing 3. to have 4. him enter 5. me believe 6. dial, say 7. enter, go away 8. asking 9. buying 10. to continue

Объяснение: