I sent many Christmas cards to my friends.(变为一般疑问句) [] you [

I sent many Christmas cards to my friends.(变为一般疑问句) [] you [ He has sent many cards to his friends. many cards划线提问 I have already received some Christmas cards from my friends Send Christmas cards to my friends.改句型,意思不变 I sent eight p______ to my friends during Christmas last yea they are my friends 变为一般疑问句 I have many friends变一般疑问句 But I did not send cards to my friends? I have three new friends.变为一般疑问句 把i have some friends here.变为一般疑问句 I can join you .(变为一般疑问句) my brother has many friends（怎么改为一般疑问句)