问题:
【题文】 — What _______ if he fail the exam again?
— I don’t know.
A.happen
B.happens
C.will happen
D.happened
【题文】 — What _______ if he fail the exam again?
— I don’t know.
— I don’t know.
A.happen | B.happens |
C.will happen | D.happened |
参考答案: