---Are you good _______ running _______swimming ---Swimming.

问题描述:

---Are you good _______ running _______swimming ---Swimming.
A.at;and
B.in;or
C.for;or
D.at;or

选择D
be good at 是词组,意思是擅长做...后面接ing形式
or 是或者的意思,多用于疑问句
这句话的意思是:你擅长跑步还是游泳?我擅长游泳