______ you understand the rule, you can do it well.
| A．For | B．As | C．Once | D．While |
With the mid-term examination approaching, students should ______ to stay energetic.
| A．work out | B．pull out | C．pick up | D．figure out |
The new invention made last month would have a variety of _______ in industry.
| A．discoveries | B．profits | C．guidances | D．applications |
The boy went in _______ when he left for school that he left his key inside the house.
| A．a rush so anxious | B．a such anxious rush |
| C．so an anxious rush | D．such an anxious rush |
We all felt a sense of_______when we saw so many overseas Chinese coming back safe and sound from Libya.
| A．security | B．relief | C．emergency | D．achievement |
The detective, _____ to be reading a newspaper, glanced at the man ______ next to a woman.
| A．pretending, seated | B．pretending, seating | C．pretended, seated | D．pretended, seating |