Exercise 5. Complete the sentences with the correct form ( active or passive ) of the verbs in brackets.
1. Enormous efforts ( make ) to encourage the convergence of these two approaches, most
of which were to fail.
2. AT&T ( consider ) the dominant interexchange carrier in North America.
3. The initial project ( overcome ) some of the difficulties associated with the data and
messaging system.
4. The communication function ( manage ) by this link module of the Spectec system.
5. A permanent data link between the two centres ( establish ).
6. This code ( reguire ) the company to verify, review and evaluate its safety audits.
7. Last year, one of the largest firms in the business ( undertake ) a thorough review of its
communication capability.
8. Descrete Cosine Transform technology ( choose ) as the backfone of video standards.
9. The changes ( send ) via satellite to our data-base.
10. To solve this problem, we ( use ) commercially-avaibable purchasing software.

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