—How does Jack usually go to school?
--He_____a bike, but now he_____there to keep healthy.
| A．used to riding, is used to walk | B．was used to riding, is used to walking |
| C．used to ride, is used to walking | D．used to ride, is used to walk |
Cycling is a good exercise. _______, it doesn’t pollute the air.
| A．However | B．Otherwise | C．Moreover | D．So |
— What should I do, doctor?
— _______fit ,you should take more exercise.
| A．Keep | B．Keeping |
| C．In order to | D．To keep |
Shandong is ______ the east of China, and Japan is ______ the east of China.
| A．in; to | B．to; in | C．in; in | D．to; to |
_______ was the temperature yesterday?
| A．What’s | B．How much | C．How | D．What |
Most teenagers play games on their smart-phones（智能手机）_______fun.
| A．at | B．with | C．in | D．For |