[单选题]Everyone needs to know ________ importance of rubbish sorting（分类）.
- 一、单项选择（共10题，每题3分，合计30分）
- — Lily, is this blue pencil box Steve’s?— No, it isn’t. ________ is black.
- — Lily, is this blue pencil box Steve’s?— No, it isn’t. ________ is black.
- ________ we continue to pull together, we’ll keep winning the game.
- ________ we continue to pull together, we’ll keep winning the game.
- With the help of 5G technology, the apps on the smart phone can provide ________ functions for the users than before.
- With the help of 5G technology, the apps on the smart phone can provide ________ functions for the users than before.
- The spirit of ox（牛）________ an important role for Chinas development this year.
- The spirit of ox（牛）________ an important role for Chinas development this year.
- Life ________ be easy or difficult, sometimes it depends on how you look at it.
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