It was not until the beginning of the twentieth century_______ to explore space. [ ]

________ we looked at it, the better we liked the oil painting

30—Why do you leave your daughter alone without worrying about her? —She will ____ leave home to lead her own life

Not only his parents but also his grandfather ________to a lot of places of interest in our country since they came here.

Which share is for me –Your can take _____ half. They are exactly the same.