-----How do you often go to school?
------I _____take a bus ，but now I _____walking.
| A．used to ， use to | B．was used to， am used to |
| C．am used to， used to | D．used to， am used to |
I always go to sleep ___________ the light on.
| A．in | B．with |
| C．to | D．at |
I___________ frustrated when I wasn’t sure of the correct answer.
| A．may be | B．used to |
| C．used to be | D．use to be |
— Can I get you a drink? — That’s very nice of you. I’ve already got _____.
| A．it | B．one | C．that | D．this |
The hospital opened 5 years ago. It_______ for 5 years.
| A．opened | B．opens |
| C．has been open | D．has opened |
Many students memorize the new words _______ them many times.
| A．by repeating | B．in reading |
| C．to practice | D．for writing |