问题
选择题
— You’d better keep quiet in class.
— Sometimes I______ . Yesterday, I was as quiet as a mouse during my English class.
A.would
B.do
C.did
D.was
答案
答案:B
此题考查谓语替代词do 的用法。此处do指代keep quiet in class,根据前面的sometimes 可知,指的是经常性的行为,用do而不用did。