A、 When they were doing
B、 After they have done
C、 Having done
D、 They had done
答案:C
A、 When they were doing
B、 After they have done
C、 Having done
D、 They had done
答案:C
A. 坚持与时俱进
B. 坚持党的先进性
C. 坚持执政为民
D. 把发展作为第一要务
A. don't go
B. haven't gone
C. am not going
D. didn't go
解析:解析:used to do 过去常常做某事
A. 矛盾的同一性和斗争性的联系
B. 主要矛盾和次要矛盾的联系
C. 矛盾的主要方面和次要方面的联系
D. 矛盾的特殊性和普遍性的联系
A. 夸大运动的绝对性
B. 设想没有物质的运动
C. 否认静止的存在
D. 设想不运动的物质
A. enter
B. enters
C. entering
D. entered
解析:解析:wheh状语从句中的主语是第三人称单数,