It is________that when he's tired he gets badtempered.
[    ]
A. promised  
B. acknowledged
C. attributed  
D. accepted
Safety regulations are being________by company managers in the drive to increase profits. That's why the accident happened.
[     ]

A．left  
B．thrown
C．ignored  
D．emphasized

She________that he write a letter explaining why he didn't turn up at her birthday party.
[     ]
A．hoped  
B．supposed
C．expected  
D．urged
In the International Young Pianists Competition, when it was________that Lang Lang had won, he was
too excited to hold back his tears.
[     ]
A．told  
B．mentioned
C．announced  
D．recognized
Although they had made careful preparation, unexpected difficulties________in the course of their
experiments.
[     ]
A．rose  
B．raised  
C．lifted  
D．arose
It's the government that________the country through the difficulties ahead.
[     ]
A．lead  
B．guarded
C．guides  
D．directed
He is no longer a child，and let him learn to________the problem himself.
[     ]
A．settle  
B．discuss
C．deal  
D．decide
He should________his attention________the main problems.
[     ]
A．aim；with  
B．pay；on
C．focus；on  
D．concentrate；with
We don't like him because he is always speaking highly of the part he________in the group.
[     ]
A. makes  
B. takes  
C. does  
D. plays
At minus 130°C,   a living cell can be ________ for a thousand years.
[     ]
A. spared  
B. protected
C. preserved  
D. developed
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