（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
（2014上海）Amy will study in an international language school for several weeks．（对画线部分提问）
________ ________will Amy study in all international language school？
They dug up the road and________a box hidden under it．
A．find
B．found out
C．discovered
D．invented
