. 单项选择（15分） 选择可以填入空白处的最佳选项。( ) 1. The students at this school always take active part in volunteer work during summer vacation. A. a B. an C. the D. /( ) 2. My dad doesnt like the sour in the slightest. A. sound B. smell C. taste D. sight( ) 3. The water is not enough. Add some more sugar, please.A. crispy B. sweet C. salty D. sour( ) 4. What do you think of this football match?
