One of the popular expressions in 2012 ________ “Positive energy”．
| A．is |
| B．are |
| C．was |
| D．were |
Don’t worry, Mom. I’m to look after myself.
| A．enough old | B．enough young | C．old enough | D．young enough |
___________ should not be allowed to go out at night.
| A．Twelve-years -old | B．Twelve-year-olds |
| C．Twelve years old | D．Twelve year olds |
—_________ work in Microsoft? —Yes, I did.
| A．Did you used to | B．Did you use to | C．Do you used to | D．Was you use to |
—_____do you learn English so well?
— _____ asking the teacher for help.
| A．What; By | B．How; With | C．How; By | D．What; With |
—What should I buy for Tom’s birthday?
— How about ______camera? He loves taking photos.
| A．a | B．an | C．the | D．/ |