<正>从A,B,C,D四个选项中,选出能填入空白处的最佳答案。1.(NMET 2000)Someone called in the middle of the night,but they hung up I could answer the phone. A.as B.since C.until D.before2.(NMET 2000)The WTO cannot live up to its name itdoes not in- clude a country that is home to one fifth of mankind. A.as long as B.while C.if D.even though3.(NMET 1999)You should make it a rule to leave things you can find them again.