_____ have you been swimming? For five years.
| A．How many times | B．How long |
| C．How often | D．How much |
They arrived ___ London___ a cold winter night.
| A．at, in | B．in, on | C．at, on | D．in, at |
— Can you __________ another solution to the problem ?
| A．come up with | B．cheer up |
| C．clean up | D．set up |
______of the teachers in the school are from the famous colleges.
| A．Three quarters | B．Two-third |
| C．two fifth | D．Two-nineth |
Miss Li is one of _______ in our school.
| A．a popular teacher | B．more popular teacher |
| C．most popular teacher | D．the most popular teachers |
Li Li get up at 7:30.
| A．used to | B．used |
| C．was used to | D．uses to |