John his homework now. He always his homework in the evening.
A. is doing; is doing
B. does; does
C. is doing; does
________，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
—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 |
—How old is Mary？
—________．We had a special party for her________birthday yesterday．
A．Twenty；twentyth
B．Twenty；twentieth
C．Twenties；twentieth
（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 |