Combine each pair of sentences into one

题目

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

答案

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.