Keep up good state of mind even if you ________ fail plenty of times.
A．must B．will C．can D．should
A left－luggage office is a place where bags ________ be left for a short time，especially at a railway station.
A．should B．can C．must D．will
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 eaten
He hesitated for a moment before kicking the ball，otherwise he ________ a goal.
A．had scored B．scored
C．would score D．would have scored
My sister met him at the Grand Theatre yesterday afternoon，so he ________ your lecture.
A．couldn't have attended B．needn't have attended
C．mustn't have attended D．shouldn't have attended
Mr.Bush is on time for everything.How ________ it be that he was late for the opening ceremony.
A．can B．should C．may D．must
