Open the brackets and write the correct form of the verbs.
1. This work (to do) very carefully by the investigators.
2. Yesterday he (to tell) to prepare a speech.
3. The famous scientists
(to introduce) to our students a couple of hours ago?
4. The article (not to publish) last week, if I am not mistaken.
5. Classical and modern methods of chemical analysis (to use) in the examination of drugs.
6. These pharmacists ( not to train) at Britain colleges.
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Ответ:
- has been done
- was told
- Were the famous scientists introduced.....?
- wasn't published
- Are used
- were not trained
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