题干
— Do you like fast food?
— No, I don't. I _______ go to McDonald.
A：always
B：usually
C：seldom
D：often
答案(点此获取答案解析）
C
— Do you like fast food?
— No, I don't. I _______ go to McDonald.
A：always
B：usually
C：seldom
D：often
的定义域是（ ）