A、 of which
B、 which
C、 of whom
D、 who
答案：C
A、 of which
B、 which
C、 of whom
D、 who
答案：C
A. break away from
B. get rid of
C. come up with
D. knock down
解析：解析:break away from 1.挣脱 The prisoner broke away from his guards. 2. 脱离某政党、政府等 A province has broken away to form a new state.解析:get rid of: 摆脱 The shop ordered 20 copies of the book and now it can＇t get rid of them.Come up with sth.: 找到或提出答案:、办法等)She came up with a new idea for increasing sales.解析:knock down: 拆除 These old houses are going to be knocked down.
A. to be introduced
B. being introduced
C. having introduced
D. to have introduced
解析：解析:主动语态中介绍某人 introduce sb. to sb.
A. and
B. when she
C. she
D. that she
解析：解析:not until 直到……才
A. what can they
B. what they can
C. how they can
D. how can they
A. might be knocked down
B. might have been knocked down
C. might knock down
D. might be knocking down
