——Mike, can you tell us something about our new teacher?——Oh, sorry. I know nothing because I _ him before.

题型：单选题题类：模拟题难易度：普通

——Mike, can you tell us something about our new teacher?
——Oh, sorry. I know nothing because I _ him before.

A、saw B、didn't see C、have seen D、haven't seen

举一反三

—Good for you!

Don't cry, the sick have {#blank#}1{#/blank#} {#blank#}2{#/blank#}.

—Yes. A large number of tourists _________so far because of the new look of our city.

John {#blank#}1{#/blank#} drunk three cups of water {#blank#}2{#/blank#}.

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