问题
选择题
— Did you say goodbye to Anna?
— Yes .When I _____ to say goodbye to her, she ______ the piano.
A．go; is playing
B．went; played
C．goes ; was playing
D．went ; was playing
答案
答案：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。