【正文】
_ you put it into a fridge. A. though B. unless C. because D. once ( )9. Could you give me some_____? I tried several times but failed. A. notice B. message C. suggestion D. advice B 單元語法專練 D ( )10. Learning to write is learning to think. You will know more clearly_____you write down. A. or B. unless C. if D. whether C 單元語法專練 二、根據(jù)漢語提示,用單詞的適當(dāng)形式填空