4) A thing that you don't want is dear at any price. a) Don't buy things that are dear (expensive) in their price. b) Don't buy things that are cheap in their price. c) Don't buy things you don't need even if they are cheap.

4) A thing that you don't want is dear at any price.

Эта пословица означает, что не стоит покупать то, что тебе не нужно, даже если это очень дешево.

a) Don't buy things that are dear (expensive) in their price. - Неверный вариант, пословица не о дорогих вещах.

b) Don't buy things that are cheap in their price. - Неверный вариант, пословица не о дешевых вещах.

c) Don't buy things you don't need even if they are cheap. - Этот вариант наиболее точно передает смысл пословицы.

Ответ: c) Don't buy things you don't need even if they are cheap.