-- Do you know why he left so early ? --
题型:选择题
问题:
-- Do you know why he left so early ?
--__________ for the English test, I guess.
A.To study
B.Study
C.Studied
D.Studying
-- Do you know why he left so early ?
--__________ for the English test, I guess.
A.To study
B.Study
C.Studied
D.Studying