问题
选择题
— What's the matter?
— I am having trouble ______ who has taken my book. [ ]
A.finding
B.looking for
C.finding out
D.looking up
答案
答案:C
— What's the matter?
— I am having trouble ______ who has taken my book. [ ]
A.finding
B.looking for
C.finding out
D.looking up
答案:C