Tu Youyou is a Chinese scientist. She medicine since 1951.
| A．will study | B．has studied |
| C．studies | D．is studying |
How does Jack usually go to school?
He _____ride a bike, but now he _____ walking there.
| A．used to, is used to | B．is used to, used to |
| C．uses to , was used to | D．used to ,used to |
You should ______ the bus when it stops.
| A．get off | B．cut off | C．take off | D．put off |
— The radio says it will be rainy tomorrow.
— . I planned to go hiking with my friends.
| A．I hope so | B．I’m afraid so |
| C．Sounds good | D．Bad luck |
— I can’t believe the old man can come here from his home on foot.
— It’s really not easy such an old man so far.
| A．to； to walk | B．for； walking |
| C．to； walking | D．for； to walk |
— cups of orange juice are there on the table?
— Five.
| A．How much | B．How many |
| C．How often | D．How soon |