问题
My friend, who _____on the International Olympic committee all his life, is retiring next month. [ ]
A: served
B: is serving
C: had served
D: has served
B: is serving
C: had served
D: has served
正确答案是：
同类题型
st _______ when I make adeep breath, doctor.
It rained heavily in the south, ______ serious flooding in several provinces.
Where ______ the students—They are having lunch in the dining hall.
Have you seen Jack recently? I wonder_____ with his classmates.
What do you think of Tom I want torecommend him ____ my manager.—— Not bad.