--What are on show in the museum?--Some photos ___ by African children.A.are taken B.were taken C.taken D.have been takenB C D应选哪一个,
问题描述:
--What are on show in the museum?--Some photos ___ by African children.
A.are taken B.were taken C.taken D.have been taken
B C D应选哪一个,
答