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题型：单选题题类：模拟题难易度：普通

—Uncle John is badly ill these days.
—Sorry to hear that. he leaves the bad factory, he won't be able to get better.

A、If B、Though C、Since D、Unless

举一反三

I can't say I want to visit my grandma. I haven't met her for a long time.

—The plane won't take off ______ the thick clouds move away.

—Let's wait patiently for the announcement from the airport.

_________________ it got dark, they worked hard there.

You can come and play with me _____ you're free.

—I'm sorry I've taken your dictionary because they have the same color.

—It doesn't matter.

If it _________ tomorrow, we will go camping with you.

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