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题型：单选题题类：真题难易度：容易

——Look at the sign! It says"No Smoking".

——Oh, sorry. I ____it.

A、don't see B、haven't seen C、wasn't seen D、didn't see

举一反三

Where did you {#blank#}1{#/blank#} (stay) during the holiday?

He {#blank#}1{#/blank#} (write) a letter to his parents last week.

—Have you known Bob for years?

—Yes, since he ________ to China.

He c{#blank#}1{#/blank#}(导致)a lot of trouble for his parents.

The scientists {#blank#}1{#/blank#} out a spaceship to the Mars last week. (send)

你妈妈让你立刻回家。

Your mother asked you to go home {#blank#}1{#/blank#} {#blank#}2{#/blank#}.

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