单项选择题
His marked changes in personality were （）by a series of unfortunate events in his life.
A.brought to B.brought out C.brought about D.brought up
单项选择题 Mostofthestudentsaresaidto（）theproposednewtrainingsystem.
单项选择题 Ihaveto（）myvisitasI’llbeverybusynextweek.
单项选择题 Itisvery（）ofyoutoletusknowyouaregoingtobelate.
