Because of H7N9 bird flu,all the chicken markets in Shanghai have been closed and won’t open until further________.
. Why didn’t you come? Haven’t you __________?
This dictionary is _____ to my reading, but that one is __________.
. We can hope ___ the best but we must prepare ____ the worst at the same time.
.Professor White has received a letter ___ to give a lecture in Peking University.
.The ____ in these villages has to get its water from well-spring.