The chief________of the year 2010 for Shanghai will be the Expo.
#4788
A
incident
B
event
C
affair
D
accident
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There were signs here and there, _____ visitors to look out for ______ rocks.
#5018
A
warning; fallen
B
warned; falling
C
to warn; fallen
D
warning; falling
The ______ on his face suggested that he was a little nervous .
#4575
A
instruction
B
expression
C
attitude
D
behaviour