问题
The public is requiring the Malaysian government to share________ Flight MH370.
A:what they have known about
B:what have they known about
C:when they have known about
D:when have they known about
B:what have they known about
C:when they have known about
D:when have they known about
正确答案是：
同类题型
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They have ________for about ten years.
_________ is known to us all that the earth is smaller than the sun.