______ it be true that we will have to wait for 3 hours in a line to get into the French Pavilion in the Expo Site?
#87876
A
Must
B
Shall
C
Can
D
Need
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The workers demanded that their employer_____ their working conditions. 
#86737
A
had improved
B
would improve
C
improve
D
will improve
--I can’t understand why our boss is late. --He _____the early bus.
#88079
A
could miss
B
may have missed
C
can have missed
D
might miss
________anyone phone, tell them I’m in conference.
#87869
A
Would
B
Shall
C
Could
D
Should