The teacher’s efforts ______ when one of
题型:选择题
问题:
The teacher’s efforts ______ when one of his students was admitted to Beijing University last summer.
A.paid back
B.paid off
C.paid for
D.paid out
The teacher’s efforts ______ when one of his students was admitted to Beijing University last summer.
A.paid back
B.paid off
C.paid for
D.paid out