What were you doing ________ the thief came in?
A. when B. while C. after
There are _______ foreign students in the class. Two are from the UK, three are from Australia and the other six are from Canada.
| A．five | B．eight | C．eleven | D．thirteen |
Mr. Jackson likes to have _______ cup of coffee in the morning.
| A．a | B．an | C．the | D．/ |
My uncle is a doctor. He sometimes has to work _______ night.
| A．in | B．at | C．on | D．for |
–What about food? Would you like some _______?
–Yes, please.
| A．egg | B．tea | C．rice | D．banana |
–Is that _______ mother, Jack?
–No. She is my aunt.
| A．me | B．mine | C．you | D．your |