—I wonder why he has been acting so strangely these days．
—Recent pressure at work may ____ his behavior．
| A．account for | B．call for | C．change for | D．stand for |
In the faraway mountainous village, people still ______ the old traditions.
| A．take up | B．bring up |
| C．use up | D．keep up |
With the rapid development of China’s economy, ______ people would like to take holidays abroad.
| A．a plenty of | B．a good many of |
| C．a great many | D．the number of |
An earthquake killed over fifty people in this area, ______ hundreds of people homeless.
| A．to leave | B．leaving |
| C．left | D．having left |
The 6th China (Guangzhou) International Auto Show attracted nearly 600 ______, displaying 800 vehicles (车辆).
| A．enterprises | B．work | C．jobs | D．stores |
US President Barack Obama ______ for a moment, then went on with his speech.
| A．finished | B．ended | C．closed | D．paused |