1.Insert (插入)the missing number.
10 | 4 | 5 | 9 |
3 | 13 | 10 | 5 |
8 | 4 | 6 | _____ |
2.Which comes next?
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3.—Do we need to buy a map?
—No,but don’t worry. I used to(过去一直)live here, so I know it like the back of my hand.
What does “know it like the back of my hand” mean here? You may answer it in Chinese or English.
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4.Find the missing letter.
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5.Jack is 15 years old, three times as old as his sister. How old will Jack and his sister be when he is twice as old as his sister?
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