騷客。眼迷離。

Which is right?

□ 1. If you don't put leftovers in the refrigerator, they will go bad.

□ 2. If you don't put leftover in the refrigerator, they will go bad.

○ 1. If you don't put leftovers in the refrigerator, they will go bad.

     2. If you don't put leftover in the refrigerator, they will go bad.

廚餘leftovers一字應用複數形，而leftover是形容詞，所以亦可說If you don't put leftover food in the refrigerator, it will go bad.

"Leftover" is an adjective. The noun form is plural, "leftovers". You can also say, "If you don't put leftover food in the refrigerator, it will go bad".