16.Mom bought me ________ MP3 for my birthday present last Sunday.
A. the B. an C. 不填 D. a
17.The place _____ interested me most was the Children's Palace.
A. which B. where C. what D. in which
18.Do you know the man _______ just now?
A. whom I spoke B. to who I spoke C. I spoke to D. that I spoke
