Question

It’s ten o’clock. Betty _______ piano.

1. A.
   is playing
2. B.
   plays
3. C.
   is playing the
4. D.
   plays the

Answer 1

C
具体的时间通常用进行时态，用be+doing的结构，弹乐器通常在乐器前加the，
故本题选C。