三、单项选择。(10分) ( A ) 1. Is there a river ________ the mountain? A. in front of B. in front C. in the front ( B ) 2. Sarah's favourite food ________ ice cream. A. am B. is C. are ( C ) 3. We ___ English, maths and PE this afternoon. A. has B. don't C. have ( B ) 4. I have ________ English class at 4 o'clock. A. a B. an C. /