We've been doing with that company for many years.（）

题库:综合类 类型:最佳选择题 时间:2017-07-03 03:11:55 免费下载:《单项选择》Word试卷

We've been doing with that company for many years.（）
A.comparing
B.dealing
C.keeping
D.combining

本题关键词:僵a,ECF-A,EP21-A,EP6-A,EP18-A,EP7-A,Lp(a),Lp（a）,A-aDO2,抗A;