问题
选择题
What_____you_____at nine yesterday morning?
A.have, done
B.did, do
C.were, doing
D.do, do
答案
答案:C
at nine yesterday,表示过去进行时,故选C
What_____you_____at nine yesterday morning?
A.have, done
B.did, do
C.were, doing
D.do, do
答案:C
at nine yesterday,表示过去进行时,故选C