2019年mpa考试英语真题——连词225

{01}I had walked a few steps _______ I realized that I was lost in the thick fog. A.unless B.Before C.When D.since 解析：before表示“还没……就……”
本题选B。
{02}Many workers were organized to clear away_______ remained of the World Trade
Center. A.those B.that C.what D.where 解析：该题空格处缺少的是连词，且在从句中作主语，所以排除A,D; that在名词性从句
中只起连接作用。
本题选C。