what are you doing it ( )? A.at B.for C.with D.in

What are you doing?I missing you! i know who you are,but what are you doing what are you doing? What are you doing? what are you doing What are you doing? WHAT ARE YOU DOING? what are you doing? “What are you doing now?I miss see you! hey ...What are you doing?I want to sleep.. what are you doing? I am (只是)having lunch. what are you doing?I ____(do)my homework. 填空What are you doing?I'm()()my keys. What are you doing?I'm looking ___my pencil. What are you doing?I'm playing violin.（改错） What are you doing?I`m washing the __(dish) I am playing house.What are you doing? what are you doing?I am__basketball.A play B playing