I have no problem (爬)the mountain,which is not too high.
这三年里你们取得了多么大的进步啊!
you have in the past three years!
孩子们越早学会独立,对他们的未来越好。
kids learn to be independent, it is for their future.
你最好不要在工作日去看他。
You to visit him on weekdays.
快点,否则我们上课要迟到的。
, we will be for class.
With the development of technology,s (太空)travel will be a common thing.