It has been announced that candidates________remain in their seats until all the papers have been collected.
A. can
B. will
C. may
D. shall
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It is unthinkable that he_________be so careless.
A. will
B. would
C. shall
D. should
The boss has promised that every player in NBA__________have a rise in income.
A. would
B. might
C. shall
D. should
A man wants to see you, sir._________he wait outside?
A. Will
B. Shall
C. Would
D. Ought
Oh, I'm not feeling well in the stomach.I_________so much fried chicken just now.
A. shouldn't eat
B. mustn't have eaten
C. shouldn't have eaten
D. mustn't eat