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题型：单选题题类：真题难易度：普通

——Don't open the door, _______who knocks on it.
——No problem, mom. You've told me many times.

A、even though B、no matter C、instead of

举一反三

Tony often ________ a shower after he gets up.

I don't think it is difficult ________ English every morning.

______ 8: 00 now. Let's ______ our Chinese.

These workers are all wearing metal helmets for {#blank#}1{#/blank#} (protect).

What about{#blank#}1{#/blank#}(try) some delicious food in the local restaurant?

恐怕明天我不能帮你做家务了。

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