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题型：单选题题类：常考题难易度：普通

北师大版（一起点）小学英语三年级下册Unit 10同步练习（2）

—What are you doing?

— I'm ______things.

A、sell B、selling

举一反三

They are ________football.

They are singing very________. So I can't hear you.

Look! They are {#blank#}1{#/blank#}(talk) about their plans.

Look, the monkey is ________ in the tree.

{#blank#}1{#/blank#} (collect) dolls is my hobby.

________ the baby's mother talking?

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