1. what he ( to do) here? he (to wait) for his friend. 2. what he ( to do) here? he ( to wait) for his friend. 3. when i (to come) yesterday, i (to see) that my brother (to do)his lesson. 4. where (to be) nick? he (to play)tennis. he (to play) tennis well.
came, saw, doing
is, playing, plays