Supply the Present Perfect Continuous Tense of the verbs in brackets.

... /> 1. She. with us since then. (live)
2. How long. the children. (play)?
3. He is tired. He. all day. (dig)
4. She. at this school for twenty years. (teach)
5. He. experiments for a year. (make)
6. What. you. with yourself lately (do)?
7. I think she. lies as usual. (tell)
8. I. myself that question for many years. (ask)
9. You. me since the very moment I left the house. (follow)
10. We. our librarian to put the books in the right order for three days. (help)
11. He says he. for a long time without achieving good results. (work)

1 She has been living with us since then.
2 How long have you been playing the children?
3 He is tired. He has been digging all day.
4 She has been teaching at this school for twenty years.
5 He has been making experiments for a year.
6 What have you been doing with yourself lately?
7 I think she has been telling lies as usual.
8 I have been asking myself that question for many years.
9 You have been following me since the very moment I left the house.
10 We have been helping our librarian to put the books in the right order for three days.
11 He says he has been working for a long time without achieving good results.