we were playing basketball on the playground, it began to rain.
| A．While | B．After |
| C．Before | D．Since |
Julie didn’t leave her office _____ the police arrived.
| A．however | B．whenever | C．while | D．until |
Jiefangbei is not far from Chaotianmen. You can easily visit _____ in a day.
| A．each | B．none | C．both | D．neither |
You’d better take care, _____ you will hurt your eyes.
| A．so | B．but | C．or | D．and |
Helen loves reading. She has read _____ books this month.
| A．five | B．fifth | C．five of | D．fifth of |
It’s surprising that Mr. Ma’s little daughter _____ speak English so well.
| A．must | B．can | C．mustn’t | D．can’t |