The old man __________ in Tibet for two years as avolunteer teacher；it is an experience he oftenmentions.

The problem is that she doesn’t know how to _____ so much money left to her. [ ]

下列成语使用错误的一项是（ ）

In the worst-affected regions, many areas remain in chaos(混乱), with roads inaccessible, public transportation at a total stop and power and telecommunication networks completely ______

I shall never forget those years _______ I lived on the farm with the farmers, _______ has a great effect on my life.