---Would you please take a short walk with us now? ---____. But I’m busy at present.
| A．Of course not | B．That’s all right | C．I’d like to | D．Sorry, I can't |
at in this way, the present situation about birds flue doesn’t seem so disappointing.
| A．Looking | B．Looked |
| C．Having looked | D．To look |
, I think, and all the problems could be settled.
| A．If you make more efforts |
| B．Making more efforts |
| C．A bit more effort |
| D．To have made more efforts |
Lu Xun was ___________ medical student before he turned ___________ great writer.
| A．the; the | B．the; a | C．a; / | D．a; a |
— These boxes are too heavy for me to carry.
— Here, I’ll give you a hand ________ them.
| A．for | B．to | C．with | D．by |
They said the building would be completed ________ a year.
| A．after | B．for | C．in | D．about |