We all know that a bright future will ______those who always look ahead instead of looking back.

 I would appreciate ______, to be frank, if my computer could be fixed as soon as possible.

(2013·辽宁五校协作体二模) I can't say which type of tea tastes better. It's just a(n) ________ of personal preference.

“To avoid such disasters ,our _____for war should go away.” said the old soldier.

The heart is a（n）       organ,  It is of absolute  importance to our body and life．