Question

— Did you say goodbye to Anna?

— Yes .When I _____  to say goodbye to her, she ______ the piano.

1. A.
   go; is playing
2. B.
   went; played
3. C.
   goes ; was playing
4. D.
   went ; was playing

Answer 1

D
此题重点考查一般过去时和过去进行时的基本构成和基本用法。