(   )1. A. By studying with her classmates.          B. By reading the textbooks.     

C. By listening to tapes.

(   )2. A. He thinks writing is the most difficult.      B. He thinks speaking is the most difficult.              C. He thinks listening is the most difficult.

(   )3. A. Mario used to play the violin.             B. Mario used to play the piano.                 

C. Mario used to play the drums.