一 Sam, come downstairs, please. I need your help.一 Sorry, mum. I on the phone.

题型：单选题题类：常考题难易度：普通

初中英语牛津版（深圳·广州）七年级下册Module 2 Man's best friends unit 4 Save the trees同步测试

一 Sam, come downstairs, please. I need your help.

一 Sorry, mum. I on the phone.

A、am talking B、talked C、was talking

举一反三

— He his homework in his bedroom.

— Wait a moment, please. He _________ on the phone to his cousin.

— _______.

— Easy. I will.

There are some chemical factories {#blank#}1{#/blank#} waste water {#blank#}2{#/blank#} the river.

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