----Does Liu Hua serve in the army?
----No,but he__________in the army for three years.
| A．served | B．has served | C．is serving | D．would serve |
The company has turned ____ e-commerce.
| A．did | B．does | C．to do | D．to doing |
The enemies tried to ____ the city, but they failed in the end.
| A．make possession of | B．take possession of |
| C．be covered with | D．make up of |
Japan is ____ the east of China, while India is ____ the west of China.
| A．to; on | B．on; to | C．in; to | D．to; in |
It was stupid ____ him for help. Everyone knows that he is very mean.
| A．you ask | B．for you to ask | C．of you to ask | D．of you asking |
It is no ____ arguing with Bill because he will never change his mind.
| A．way | B．help | C．time | D．use |