Combine each pair of sentences into one
2个回答
6.The moon became the first body in space which man set foot on.
7.The Basic Science Series includes 16 scientific topics,each of which is a complete information book.
8.The Earth is a beautiful planet which we live on.
9.Oliver learned that Rose had fallen into a deep sleep,from which she would awake either to get better or to die.
10.Magnetic compasses are used by travelers and navigators to tell them if they are traveling in the direction.
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