According to scientists, our mental abilities begin to from the age of 27 after reaching the highest level at 22.
| A．differ | B．increase | C．develop | D．decline |
--- Do you feel like ____ there or shall we take a bus?
---- I’d like _____ . But since there isn’t much time left, I’d rather you took a taxi.
| A．walking; walking | B．to walk ; walking | C．walking; to walk | D．to walk; to walk |
I got nervous when the woman _____ opposite kept staring at me.
| A．seat | B．to seat | C．seating | D．seated |
--- How do you deal with the disagreement between the company and the customers?
---- The key ____ the problem is to meet the demand _____ by the customers.
| A．to solving; make | B．to solve; made | C．to solve; making | D．to solving; made |
_____ from endless homework on weekends, the students now can have their own activities, such as taking a ride together to watch the sunrise.
| A．Freed | B．Freeing | C．To free | D．Having freed |
You can’t imagine what difficulty we had ____ home in the snowstorm.
| A．walked | B．walk | C．to walk | D．walking |