1 The scientists have presented a detailed analysis of the results.
2 They have brought in a food analyst to help in the research.
3 All process materials are tested using highly developed analytical techniques.
4 The researchers have corne up with an innovative idea for the use of recycled plastics.
5 Charles Dyson is the inventor of a vacuum cleaner which works on a new principle
6 The advent of the ballpoint pen was a wonderful invention .
7 They employ a large tearn of software developers .
Объяснение:
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Complete the sentences. use the past simple form of the verbs in the box. borrow go be(2) teach have teii invite example: he borrowed the book from the school library yesterday. 1. the friends five lessons last friday. 2. last year she us nature studies. her lessons very interesting. 3. helen about her new classmate. 4. last year egor's english poor. but now he speaks english very well. 5. it was warm and sunny yesterday. we for a walk in the park. 6. yesterday, sveta her friends to the birthday party.