—This wall of air is an effective answer to the problem and it ______ work.—But it is a question to put such a wall of air around the statue.

题型：单选题题类：常考题难易度：普通

山东省2010届高考下学期模拟考试（一）

—This wall of air is an effective answer to the problem and it ______ work.
—But it is a question to put such a wall of air around the statue.

A、may B、must C、should D、could

举一反三

—It ________ be Han Hong, but I' m not sure. Last Friday I missed it.

—Yeah, I stayed up late writing a report.

Charlie Chaplin made people laugh at a time when they felt depressed, so they could {#blank#}1{#/blank#}.

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