THE YOUNG PUPILS ARE AMUSED ... THE NEW PICTURE-BOOKS IN THE LIBRA...

15. - 3500 CAU TRAC NGHIEM ON TAP AV THCS
3500 CAU TRAC NGHIEM ON TAP AV THCS

15. The young pupils are amused ... the new picture-books in

the library.

a. to

b. in

c. at

d. with

 c