need:
My neighbors helped me in my time of need.
我的邻居在我困难的日子帮了我忙。
at the beginning of......
The teacher handed out the books at the beginning of the lesson.
开始上课时，老师给大家发书。
be popular with Sb
Most people would like to be popular with others, but not everyone can achieve this goal.
大部分的人都想受人欢迎，但是并非每个人都能达到目标。
different kinds of......
Books have different kinds of covers.
书有各种不同的封面。
for example
Greenhouse gases, for example, are global problems.
例如，温室气体排放是个全球性的问题。
How about......
How about that?
这样可以了吧?
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希望帮到你啊
