问题
选择题
In America, if _______ friend has invited you to drop in at any time, it is _______ best to call
before visiting to make sure it is convenient for him.
A.a; a
B.the; a
C.a; 不填
D.the; 不填
答案
答案:C
In America, if _______ friend has invited you to drop in at any time, it is _______ best to call
before visiting to make sure it is convenient for him.
A.a; a
B.the; a
C.a; 不填
D.the; 不填
答案:C