Look!One of the children _____ in the river.
| A．was swimming | B．is swimming | C．are swimming | D．were swimming |
—Can you help me clean the classroom?
—___________.
| A．My pleasure | B．With pleasure | C．Never mind | D．Thanks a lot |
I used to ___________ in the country. But now I am used to ___________ in the city.
| A．live; live | B．living; living | C．live; living | D．living; live |
He ___________ Taizhou for two weeks.
| A．has left | B．has been away from |
| C．has been away | D．left |
—How long has Eliza been a nurse?
—___________.
| A．Since 2002 | B．Four years ago |
| C．In 2002 | D．For 2002 |
—Have you ___________ been to Beijing?
—Yes. But only once.
| A．never | B．ever | C．yet | D．before |