The astronauts have _____ to the space station twice

The astronauts have _____ to the space station twice The astronauts _____(go) to the space station .They will be Losts of astronauts ___to the space station . They found it 高中英语的完成句子-In space the astronauts will have to face the circ Lots of astronauts ________(has/have) been to the space stat some astronauts must travel through the space to repair the The three astronauts (took a space shuttle)to go tothe space What do the astronauts in space eat?----They eat _____(特殊的）f Have the scientists_____ spoken to the astronauts?A.already The threats to the health of astronauts in space are very di in the space station还是on the space station on the space station 还是 in the space station呢?