The financial crisis has put the world economy in a difficult _________.
| A．occasion | B．condition | C．evaluation | D．situation |
_______ all the inventions have in common is _____they have succeeded.
A. What; what B. That; that C. What; that D That; what
The government has to close those small factories to prevent the water of the river ______.
| A．polluting | B．from polluting | C．being polluted | D．polluted |
He wants to see changes in the company and I am sure he will，______.
| A．on time | B．in time | C．at one time | D．at a time |
The traditional view is ____ we sleep because our brain is “programmed” to make us do so.
| A．when | B．why | C．whether | D．that |
Then you usually lie there just ______ the ceiling, thinking about everything that could go wrong.
| A．glancing at | B．watching at | C．glaring at | D．staring at |