My mother works in a school. She _________ maths.
| A．teach | B．will teach |
| C．teaches | D．teaching |
（安徽）Rick has learned a lot about Chinese culture________he came to China．
| A．before |
| B．when |
| C．until |
| D．since |
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 |
They dug up the road and________a box hidden under it．
| A．find |
| B．found out |
| C．discovered |
| D．invented |
There has never been such a beautiful village________in the world．
| A．anywhere |
| B．everywhere |
| C．somewhere |
| D．nowhere |