Can you be __________ about the meeting? It’s very important.

A. serious about B. worried about C. full of D. strict with

A 【解析】句意：你能這次會(huì)議嚴(yán)肅點(diǎn)嗎？它非常重要。serious about對(duì)…嚴(yán)肅、認(rèn)真；worried about 為…擔(dān)心；full of充滿；strict with對(duì)某人嚴(yán)格。根據(jù)句意可知，這里表示嚴(yán)肅、認(rèn)真對(duì)待某事，故應(yīng)選A。
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