问题
选择题
--- I hear Robert has gone to Harvard University for his master’s degree.
--- Oh, how nice! Do you know when he ____?
A.was leaving
B.left
C.had left
D.has left
答案
答案:B
--- I hear Robert has gone to Harvard University for his master’s degree.
--- Oh, how nice! Do you know when he ____?
A.was leaving
B.left
C.had left
D.has left
答案:B