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题型：单选题题类：常考题难易度：普通

仁爱科普版九年级上Unit 4 Amazing ScienceTopic 2 I’m excited about the things that will be discovered in the f

The new dictionaries are very useful. They _______ well and _______ already.

A、sell; have been sold out B、sold; had sold out C、sell; sell out D、are sold; have been sold out

举一反三

Some of the swamps have become ________.

How many Chinese astronauts _______ into space since 2003?

Nothing{#blank#}1{#/blank#}(have) been thrown away.

In the last few years, lots of tall buildings in our city.

No decision about that matter yet. We are still considering it.

All the work {#blank#}1{#/blank#}(not do) yet.

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