1.He dwelled so much on the problem only to show his (unaware) of the solution to it.
答案unawareness
2.The player is under good treatment and the chances are that he will recover from his (injure) in time for the next game.
答案injury
3.In some cases,the resulting paths of damage can (stretch) more than a kilometre wide and eighty kilometres long.
答案stretch
4.There are varieties of reasons in favour of my opinion that a Chinese dictionary shouldn’t (include) English words.
答案include
