The CD is very cheap ,i 'll take it .为什么此处take 不能换成buy 类似的,F

The CD is very cheap ,i 'll take it .为什么此处take 不能换成buy 类似的,F I'll take them.这里的take,不能换成buy吗? 英语翻译选出与括号部分意义相同或相近的选项the pencil case is cheap.I"ll (take) it This coat is very cheap,I (will )take it now which toy car does the man take?此处的take,能不能换成buy呢? i'll (take)it.为什么不是buy?get? i'll buy it与i'll take it 为什么英语对话里不说I’ll buy it.却说I'll take it. 我将买它 用英语翻译是I'll take it ,为什么不是I'll buy it The skirt is very c_____ and beautiful,so I'll take it. the dress is very cheap.i can buy it.合并句子 The How much is the T-shirt I will take it.中为什么答语用take而不用能buy?