I was doing my homework _______ a dog came in.
| A．when | B．while |
| C．as | D．At |
--HowoftendoesGinatakethebustoschool?
--She_______takesthebusbecauseshelikeswalkingthere．
| A．never | B．always | C．often | D．usually |
-WhenareyougoingtoHainan?
-Iamgoingthere_______June8，2009．
| A．with | B．on | C．at | D．in |
Mysisterstillwantstogotoschool_______sheisill．
| A．although | B．for | C．at | D．and |
Cai Qin has given concerts all over China and the tickets have always_______.
| A．sold out | B． set out | C．set up | D．seen off |
---Must we finish the work all day?
---________. You can do it tomorrow.
| A．Yes, you must. | B．No, you mustn’t. |
| C．No, you needn’t. | D．Yes, you may. |