题型：单选题题类：常考题难易度：普通

Li Lei works in England . He comes to China__.

A、 three time a year B、three times a year C、three times year

举一反三

— He is fourteen.

—No, I have ________ been there.

—{#blank#}1{#/blank#}(two)a year.

yet already ever never still

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