looking the trouble

Question

—What's the matter?　　—I am having the trouble _____ who has taken my book.　　A.finding B
—What's the matter?
　　—I am having the trouble _____ who has taken my book.
　　A.finding B.looking for C.finding out D.looking up

Answer 1

C “have the trouble…”后要用动词的-ing形式.此外,find表示“找到”,强调结果.look for表示“寻找”,loop
up是“查找(生字、电话号码等)”.find out是“找出来”之意,符合题意要求.