Question 1
正确答案: walls
Question 2
正确答案: son
Question 3
正确答案: fuel
Question 4
正确答案: oxygen
Question 5
正确答案: rectangular
Question 6
正确答案: lamps
Question 7
正确答案: family
Question 8
正确答案: winter
Question 9
正确答案: soil
Question 10
正确答案: rain