1. Complete each sentence
using the correct form of the Verbs.
1. When we saw him we (to realize)
that he (to be guilty).
2. The children still (to play) in the
garden when their mother (to come
back) from work.
3. Now that the tests (to be done)
we (to know) the origin of the disease.
4. He always said that he (to give up)
smoking but he never (to do) it.
5. It (to be) two years since he last
(to visit) our country.