Not until he retired from teaching three years ago ________having a holiday abroad.
(2012·辽宁，32)
A．he had considered
B．had he considered
C．he considered
D．did he consider
Film has a much shorter history，especially when________such art forms as music and painting. (2012·新课标全国，32)
A．having compared to
B．comparing to
C．compare to
D．compared to
It was with the help of the local guide ________ the mountain climber was rescued.
(2013·重庆，27)
A．who B．that
C．when D．how
Read this story，________you will realize that not everything can be bought with money. (2013·四川，4)
A．or B．and
C．but D．so
Not once________to Michael that he could one day become a top student in his class.
(2013·湖南，35)
A．occurred it B．it did occur
C．it occurred D．did it occur
The university estimates that living expenses for international students________around $8,450 a year，which________a burden for some of them. (2013·湖南，33)
A．are；is B．are；are
C．is；are D．is；is
