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1. products which are mass- ……………. are relatively cheap.
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2. Scientists are carrying out scientific……………. in space.
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3. The sun is the centre of our………… system and it is the furthest too .
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4. By the time I start my shift, Dr. Fred ………… for 18 hours non-stop.
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5. ……………. the message ……….. received by the time your flight takes off?
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6. Wash your hands. Dinner………. ready in 5 minutes.
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7. I ………….. for my exam all Sunday evening.
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8. She is flying to London next week, her flight ………… off at 7 a.m as the timetable shows.
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9. I ……… to London tomorrow night, I have the tickets and the visa.
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10. I ………. joined the university by 2025. There, I ………… part time.
