The astronauts have _____ to the space station twice
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The astronauts have _____ to the space station twice
A.gone B.been C.went D.be
说明原因
A.gone B.been C.went D.be
说明原因
![The astronauts have _____ to the space station twice](/uploads/image/z/1011937-49-7.jpg?t=The+astronauts+have+_____+to+the+space+station+twice)
选B
gone指去了,现在还没回来
been指去了,现在已经回来了
went是短动词,不能用于完成时
be是现在分词,完成时的have后面要用过去分词
如果您认可我的答案,请点击下面的“选为满意回答”按钮,
gone指去了,现在还没回来
been指去了,现在已经回来了
went是短动词,不能用于完成时
be是现在分词,完成时的have后面要用过去分词
如果您认可我的答案,请点击下面的“选为满意回答”按钮,
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