问题
选择题
.
---How did you know the surprising news?
---I happened _______ the event then.
A.to be covered
B.to have covered
C.to be covering
D.to cover
答案
答案:C
.
---How did you know the surprising news?
---I happened _______ the event then.
A.to be covered
B.to have covered
C.to be covering
D.to cover
答案:C