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题型：单选题题类：常考题难易度：普通

—What is the boy doing?
—He _____________ happily.

A、swims B、swam C、has swum D、is swimming

举一反三

—Where is your sister?
—She the flowers now.

— Listen! Who_____ the door? Please go and see, Jane.

— OK, Mom.

Betty's aunt ________ the floor at the moment.

Tony usually _______ homework after school. Look! He _______ his homework in the classroom.

Tony {#blank#}1{#/blank#}(uses / is using) the computer. He often {#blank#}2{#/blank#}(talks/ is talking) with his friends on WeChat.

Which of the following is WRONG?

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