（2012山西中考）________，volunteering is both a chance to help others and a good way to develop ourselves．So you’d better make time to volunteer．
A．To my surprise
B．To be honest
C．To start with
（2014山东滨州）—Look！Who’s________boy over there？
—Oh，he is my cousin，Bob．He is________honest boy．
A．a；the
B．the；a
C．the；an
D．a；an
（2014黑龙江绥化）—How old is Mary？
—________．We had a special party for her________birthday yesterday．
A．Twenty；twentyth
B．Twenty；twentieth
C．Twenties；twentieth
（2014安徽）Rick has learned a lot about Chinese culture________he came to China．
A．before
B．when
C．until
D．since
（2013北京）Miss Lin________a lot of work for the poor area since 2010．
A．does
B．did
C．has done
D．will do
—________have you been in Chongqing？
—For five years．
A．How many
B．How soon
C．How much
D．How long
