给问句选择正确的答语。
⑴What is he doing ?{#blank#}1{#/blank#} A、Sorry , I can't .
⑵Who can help me ?{#blank#}2{#/blank#} B、She's at the supermarket .
⑶Am I going to have a birthday party ?{#blank#}3{#/blank#} C、I'm fine , thank you . And you ?
⑷Where is your mum ?{#blank#}4{#/blank#} D、Yes , you are .
⑸How are you ?{#blank#}5{#/blank#} E、He's getting on the bus .