Where ___________ live before you came here?
| A．did you used to | B．did you use to |
| C．use he to | D．he used to |
___________ work in Microsoft?
| A．Did you used to | B．Did you use to |
| C．Do you used to | D．Do you use to |
When I was a child, I used to ___________ chocolate.
| A．liking | B．like | C．liked | D．likes |
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 |