1)The instructor suggested that we carry out this experiment at once,for it is quite____________.

　　2)Friendship between the two nations______________to the prosperity of the region.

　　3)The research project has only been under way for three months,so its too early to____________its success.

　　4)It,is_____________of you to call on your relatives from time to time.

　　5)For most people,it takes______________effort to leam a long poem by heart.

　　6)That_____________work experience has changed him a lot.

　　7)Convenience foods which are already prepared for cooking,are_____________in grocery stores.

　　8)The old man_____________breathing the night before.

　　9)The education approach there is characterized by an_____________on success in exams.

　　10)Before you_____________design of this products,you should research the market carefully.

　　参考答案

　　1)feasible

　　2)contributed

　　3)evaluate

　　4)considerate

　　5)considerable

　　6)brief

　　7)available

　　8)ceased

　　9)emphasis

　　10)confirms