He said that not until the wheat died from the lack of water_____ how serious the drought was.
| A．did the villagers realize | B．the villagers realized |
| C．the villagers did realize | D．realized the villagers |
Don’t keep your mouth ___ if you want to improve your spoken English.
| A．shut | B．shutting | C．shutted | D．to shut |
My classmate, Li Ming, was highly praised for ___ a good deed.
| A．doing | B．have done | C．having done | D．being done |
Sunglasses can ___ us from strong sunlight.
A. hold B. prevent C. protect D, make
There are many pine trees on ___ of the street.
| A．every side | B．neither side | C．both side | D．either side |
His father feels ___ his duty to help others.
| A．this | B．it | C．that | D．what |