You know great changes _____________ in our school in the past ten years.
| A．have been taken place | B．took place |
| C．have taken place | D．were taken place |
—What should I do, doctor? —______healthy, you should take more exercise.
| A．To keep | B．Keep | C．Keeping | D．Kept |
I will stay with you the doctor comes to help you.
| A．after | B．if | C．unless | D．until |
Nowadays of business letters are written in English.？
| A．two-third | B．two-thirds | C．two-three | D．two-threes |
—Hey, Paul! Don’t you remember me?
—_________. You are Peter. We once were classmates.
| A．Yes, I do. | B．No, I don’t. | C．Yes, I don’t. | D．No, I do |
—Do you have the new iPad?
—Sorry, they have been______. You may come next week.
| A．given out | B．run out | C．come out | D．sold out |