—Where’s my music disc? I can’t see it!—You’d better the disc carefully in your bedroom.A.

问题补充：

—Where’s my music disc? I can’t see it!

—You’d better the disc carefully in your bedroom.

A. look up B. look through C. look for

答案：

解析：本题的含义是你最好仔细地寻找，look for表示此意，故本题选C。