35.Every possible means ----- to work out the problem,but it

35.Every possible means _____ to work out the problem,but it is too difficult for us.
A.is used B.are used C.has been used D.have been used
答案为什么是C?
26.If you go on doing that kind of foolish things,you will ______ in prison.
A.bring up B.end up C.take up D.come up
答案为什么是D?
36.The first Olympics in modern times _______ in 1896
A.was taken place B.were held C.was held D.were happened
为什么选B不选C?
2.