III. Put the verbs in brackets in the correct verb tense:
1. Be careful! The teacher (look)……………………..at you.
2. I (watch)……………………..the film twice, but I still can’t understand its meaning.
3. How long …………………..you (know)…………………….Paul?
I (know)………………………him for over five years.
4. …………………..your brother (ever / be)………………………to Sydney? – No, never.
5. ………………….your dog (ever / bite)……………………..anyone?
Yes, he (bite)…………………….the postman last month.
6. Our school performance (start)……………………….late last Sunday because of the heavy rain.