March 2019 0 14 Report
Napisz zdania używając present perfect simple lub Present perfect Continuous
1. he/ work / on this project / since joining the company .
2.How much field data / you / collect.
3. Erik an Al/ study/ agriculture / for two years and they are really enjoying it.
4. They/ design / a robot system to kill weeds and theyate/ it to potential manufacturers over the last few weeks.
5. Since the 1980s made / a number of improvements in design.
6. They/ not/ use/ this machine for long. They still need sonme time to get used to it.
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