【推荐1】Complete the sentences with the given words in their proper forms. （用括号中所给单词的适当形式完成下列句子。每空格限填一词）
1. The shavers come complete with ________ (battery)
2. Tough he failed once, he wanted to have a ________try. (two)
3. She is one of the greatest _______ actresses in our country. (live)
4. At the end of the game, players usually _____ their shirts with each other. (change)
5. Next, add some _________ to the water. (chemistry)
6. The teacher’s explanation made the ________ problem clear. (puzzle)
7. We should treat others ______ (polite)
8. The house is shaded from the _______ by those tall trees. (hot)

【推荐2】Mr. Li is 50 years old. Today is his ________ (fifty) birthday.

【推荐3】We live on the ________ floor of that tall building. (nine)