( )the help of the internet ,we can lean what other people around the world are doing

问题描述:

( )the help of the internet ,we can lean what other people around the world are doing
A byB throughC with D for答案是选c但是为什么不选a啊 也有by the help of的短语啊

C.with
在某人的帮助下是with the help of ...