给问句选择正确的答语。⑴What are you doing? {#blank#}1{#/blank#} A. He is jumping.
⑵What is Tom doing?{#blank#}2{#/blank#} B. She's running.
⑶What are they doing?{#blank#}3{#/blank#} C. I'm watching TV.
⑷What is Amy doing?{#blank#}4{#/blank#} D. They are playing chess.
