(   )1. — It’s ¡¡¡¡¡¡ unusual thing for us to find ¡¡¡¡¡¡ UFO.    — I think so.

             A. a; a                    B. an; an        C. a; an             D. an; a

(   )2. — Who helped Mum wash the dishes yesterday?     — Helen ¡¡¡¡¡¡.

             A. does                   B. do                    C. did               D. was

(   )3. — Do you play the piano every day?  — Yes. I practise ¡¡¡¡¡¡ it every morning.

             A. playing           B. plays                    C. play              D. to play