Now we()by train or bus,but many years ago people()travel by

关于口语的问题 “now we're talking”
“A:I know a lovely place downtown!
B:Now we're talking!”
语句背景是两个人购物累了,找地方吃饭.
这里“Now we're talking”翻译成“现在我可来劲了”,有点不大理解为什么要这么翻,这种“now we're talking”的形式是习惯说法还是省略了什么内容?

动词的适当形式填空:(1)Now we_______(be)students of Grade 5.And we_______(be)middle school students after this summer vacation.

按要求完成句子
1.现在我们不再有时间晚了.（翻译句子）
Now we _______ have the time to play _______.
2.在过去的几年里,我学了很多英语单词.（翻译句子）
I have learned many English words _________ ________ ______ ______ ______.
3.The mobile phone cost him five hundred yuan.(同义句转换）
He ________ five hundred yuan _______ the mobile phone.
4.Jane doesn't go to work by bus any longer.(同义句转换)
Jane ________ ________ ________ to work by bus.
用所给单词的适当形式填空
1.Most children are _________ (terrify) of snakes.
2.Ante,flies and spiders are all ________ ( insect.)
3.Can you tell us ________ （exact) what you want to do?
4.Among the children,Tom is the ________(old)
5.She spent two hours ________(finish) her homework.

Now we ____(develop) the computer science because it is very useful.