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题型：单选题题类：模拟题难易度：普通

Now the air in our city is ______ than it used to be. Something must be done to stop it.

A、good B、bad C、worse D、better

举一反三

—Do you think people will have ________ work to do in the future?
— I think so. And I think they will have _______ chances to travel.

We should use _______ plastic bags to protect the environment. Let's say goodbye to them.

— It's always foggy(多雾) these days in our city. That's really terrible!

—Yes, and I hope to plant trees. ______trees, ______ air pollution.

Tony is than before, so he has friends now.

China is developing rapidly and it's {#blank#}1{#/blank#}and more powerful than ever before.(wealth)

Kitty practises dancing even harder, so she becomes {#blank#}1{#/blank#}(slim) than before.

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