This things were (c )on the earth,but they were (p ) expensive on_英语解答

This things were (c )on the earth,but they were (p ) expensive on the Mars
最好有整一段的答案

人气：353 ℃　时间：2020-02-06 09:15:05

解答

This things were (cheap )on the earth,but they were (pretty ) expensive on the Mars