19．Now our headmaster is delivering an important speech to all the students in the hall．

分析 現(xiàn)在我們的校長正在大廳里給所有的學(xué)生發(fā)表一個重要的演講．

解答 答案是delivering．考查首字母填空．句意是"現(xiàn)在我們的校長正在大廳里給所有的學(xué)生發(fā)表一個重要的演講．"所以用動詞deliver表示"發(fā)表"．句子是正在進(jìn)行時，所以be動詞is后面接動詞ing形式即delivering．故答案是delivering．

點(diǎn)評 本題考查首字母填空．首先要判斷填寫的單詞及固定搭配，然后根據(jù)句意和相關(guān)語法填寫正確的答案．

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