X. Quyidagi gaplarni bo`lishsiz gapga aylantiring:
1. He has become a great specialist in chemistry.
2. The professor has been quite satisfied with the students answers.
3. This factory has begun to produce computing machines this year.
4. My friend has spent a few weeks on the Volga.
5. It took these workers more than a month to do this work.
6. My friend has changed much since last year.
7. Only a few students have taken part in the expedition this spring.
8. The members of the expedition have made all the necessary things for their expedition.
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