他迫切想知道谁是优胜者。( wait)

　　 ___________________________________________

Please write a notice for the students and ______ .

　 A. put it up 　 B. put up it

　 C. put it on 　 D. put on it

Others viewed the findings with______ ,noting that a cause-and-effect relationship between passive smoking and cancer remains to be shown.

A.caution 　　　　　　 B.passion 　　 C.optimism 　 D.deliberation

If human beings had been a bit less greedy and cruel, more birds and animals dying out.

A. ought to avoid　　　　　　　　 B. could have been avoided

C. should have avoided　　　　　　 D. might have avoided

When Rosina Hernandez was in college，she once attended a rock concert at which one young man was cruelly beaten by another.No one made an__1__to stop the beating.The next day she was__2__to learn that the youth had died as a result of the__3__.Yet neither she nor anyone else had raised a hand to help__4__.She could never forget the incident and her responsibility as an__5__bystander(旁观者)．