3.2.7. Underline the correct form of the verb.
1) The performance has been going on for half an hour.
2) BBC documentaries have been broadcast worldwid a long time.
3) We have been invited to the party by Mr Brown's wife.
4) Who has this film been directed by?
5) Which of you has been presenting the project recently?
6) The box office has been closed since yesterday.
7) A new technology has been just introduced by engineers.
8) Neither of them has been writing anything new recently.
9) No bad news has been spread by me recently.
10) They have been communicating via Internet recently.
