12 Friendship is like money：easier made than ____(03上海春)

问题描述：

12 Friendship is like money：easier made than ____(03上海春)
A．kept B．to be kept C．keeping D．being kept
13 Unless____ to speak，you should remain silent at the conference．
A．invited B．inviting C．being invited D．having invited (‘03上春)
14. ---What do you think made Mary so upset?
---______her new bicycle. (97上海 13)
A. As she lost B. Lost C. Losing D. Because of losing
15. A computer does only what thinking people ______ (99上海19)
A. have it do B. have it done C. have done it D. having it done

问题解答：

A
A
C
A