l'm going to （the USA ）tomorrow.（”对括号内提问） They ar

l'm going to （the USA ）tomorrow.（”对括号内提问）
Where are you going tomorrow?
They are going to China this summer.( 变成一般疑问句）
Are they going to China this summer?
Zhang peng is going to buy a postcard.(变为否定句）
Zhang Peng isn't going to buy a postcard.