It's not necessary to explain the truth _____ there is spring wind, there is green grass．
A．which wherever B．that which
C．which when D．that wherever
—Are you going to stay overnight?
—Not _____ it's really necessary．
A．unless B．if C．until D．since
Those who tend to _____ to their fate are sure not to make any achievements.
A. submit B. subscribe C. correspond D. apply
It is said that many kids are worried about the year 2012, _____ , they think the earth will be destroyed by disasters．
A．where B．as C．when D．which
Wanda Plaza in Wuxi is _____ a shopping center．You can do almost anything there．
A．no more than B．not more than
C．more than D．rather than
The first African-American president of the United States received a（n） _____ welcome in the African countries, where he was received as a returning son．
A．romantic B．bureaucratic C．enthusiastic D．optimistic
