【正文】
n (努力 ). 3. “We have already tried four times. Should we try a (第五 ) time?” Mary asked. 4. The policeman (命令 ) the drunken (醉的 ) driver to get out of the car 5. He is one of the (主任 ) of the State Environmental Protection Administration. Ⅱ . 根據(jù)句意,用恰當(dāng)?shù)那閼B(tài)動(dòng)詞填空。 needn’t B. Must。 won’t D. May。 have to B. can’t。 have to D. couldn’