My brother is busy___on the Internetto work or workingWhy Why !!!!!!!!!!!!!!!!1!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Mybrotherisbusy___ontheInternettoworkorworkingWhyWhy!!!!!!!!!!!!!!!!1!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

My brother is busy___on the Internetto work or workingWhy Why !!!!!!!!!!!!!!!!1!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
My brother is busy___on the Internet
to work or working
Why Why !!!!!!!!!!!!!!!!1!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

My brother is busy___on the Internetto work or workingWhy Why !!!!!!!!!!!!!!!!1!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
working
be busy doing sth. 意思是正忙于做什么事

ing的