【正文】
故選 C。 pass on“傳遞”; find out“找出;查明”; look up“向上看;查閱”; work on“致力于;從事”。根據(jù)空格后面的動詞短語 hear the teacher clearly可排除 A與 B兩項;又根據(jù)前面的句意“我坐在教室的 前面”可推知后句應(yīng)表示“為了清楚地聽到老師講課”。故選 A。 We should______ ______ ______the danger of smoking . Be careful of check in clean up at the same time wake up to 四、語法專練 A) 用方框中的情態(tài)動詞填空 may, must, need, should, can39。一、單項選擇 1 . No one can be successful ________ hard work . A . through B . for C . with D . without 2 . — Why not ________ Alice ________ her Chinese? — Good idea . A . help; improve B . to help; improve C . help; improving D . to help; improving A D 【 點撥 】 Why not后接動詞原形,排除 B與 D兩項;又 help sb. (to) do C項,故選 A。 I am tired, but_____ _____ _____ _____, I feel happy . 15 . 我們應(yīng)該認(rèn)識到吸煙的危