Gíup mình gấp nhé! ^^
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XI. Fill in the blank with one suitable preposition.
1. A lot of people said they saw a UFO __________ the sky.
2. Have you ever heard _________ UFOs?
3. The satellite will remain ___________ orbit for several years.
4. A pilot reported that he saw 9 large round objects traveling __________ about 2800 meter an hours.
5. Once you get __________ the space trip , you will be in a different world.
6. He traceled _____________ the space shuttle Discovery.
7. The first man walked ______________ the moon ____________ 21 July 1969.
8. Do you want to take a trip _____ Mars?
9. One day on the moon lasts ________ 2 weeks.
10. The airplane had 125 passengers and crew _______ broad.