请选择ABCD,f0k/V5N0c(p4`/b;D How long have you ________?-F2E-z9z;y
A. borrowed the book-F2E-z9z;y
B. bought the bike-F2E-z9z;y
C. been back-F2E-z9z;y
D. received the letter-F2E-z9z;y