3. We must get up early enough tomorrow, ___ ...we will miss the plane. ...(A) so (B) or (C) but (D) however 4. Their country has plenty of oil, ___ ours has ...none. ...(A) when (B) where (C) while (D) as 5. We are going to be late, ___ we have to ...
3) 方式副词: carefully, properly, anxiously, suddenly, normally, fast, well, calmly, politely, proudly, softly, warmly 4) 程度副词: much,little, very,rather,so,too,still, quite, perfectly, enough, extremely, entirely,almost, slightly. 5) 疑问副词: how, when, where, why. 6) 关系副词: ...