A:he returned, did he know
B:he returned, he knew
C:did he return, did he know
D:did he return, he knew
阅读下列图文资料,回答问题.
2015年5月8日,***主席访问俄罗斯并出席俄罗斯纪念卫国战争胜利70周年庆典.
Thank you for ________ CCTV's Around The World show.