Young people tend to get up very late unless ________ to rise early.
A. required B. requiring C. they were required D. to require
No reader ________ take away a book from the library without the permission of the librarian.
A. need B. might C. shall D. will
. --Did you see ________ may be the longest total solar eclipse （日全食）in 500 years yesterday?
--No, it was cloudy above my city at that time.
A. what B. that C. who D. all
________ a two-year period, Nancy became addicted to painkillers （止疼药）.
A. Beyond B. Above C. Since D. Over
. At noon in summer the villagers like to seek shade ________ the air is cooler.
A. in where B. in which C. where D. the place where
. Since last year, the global economic slowdown ________ in many countries. It is expected that the world economy will not recover until the end of 2010.
A. is spreading B. spread C. had spread D. has been spreading
