So far many man-made satellites_____into space. A.have been set up B.are being set upC.have set upD.have bing set up

So far many man-made satellites_____into space. A.have been set up B.are being set upC.have set upD.have bing set up
So far many man-made satellites_____into space. A.have been set up B.are being set up
C.have set up
D.have bing set up

So far many man-made satellites_____into space. A.have been set up B.are being set upC.have set upD.have bing set up
选 A have been set up
解析：
① so far 到目前为止,句子用现在完成时
②主语是人造卫星,应该是 被发射,所以是被动
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A，从SO FAR可以看出这个句子应该用完成时，人造卫星应该是被发射，所以选A