After the disaster of flood, people all over the village made（）effort to rebuild their home.

单项选择题It is advisable to（）an electric wire with rubber in order to secure safety.

A. desolate
B. resolute
C. insolate
D. insulate

单项选择题It was（）to continue the negotiation since both sides lack the sincerity.

A. fertile
B. futile
C. fugitive
D. fussy