根据句意或中英文提示写出所缺单词。 1. Water covers about three quarters of the earth’s ____________.(表面) 2. _____________(though) he is very clever, he doesn’t work hard at his lessons. 3. Are you ___________ (sure) Mr Wang will come to our meeting? 4. ______________ with life on Earth, life on Mars will be better in many ways.(比较) 5. The Great Wall is one of the ____________ (unusual things that fill people with surprise) in the world. |