By the end of last year, they _______ 2,000 English words.

I didn’t hear your call because I ______ to music at that time.

  — Listen! What’s the noise?— My brother ______ the program of the World Cup in the sitting room.

My father ______ me my first model car ten years ago.

When ，____your father ____back? When he _________ back, please give me a ring.