______ herself with routine office tasks, she had no time to attend to her children.
| A．Occupying | B．Occupied |
| C．Being occupied | D．To be occupied |
The boy would rather _______ the story to himself than ______ it with his friends.
| A．keep; to share | B．to keep; share | C．keep; share | D．to keep; to share |
---- Why does the river smell terrible?
---- Because large quantities of water______．
| A．have been polluted | B．has polluted | C．has been polluted | D．have polluted |
Cathy went to the hospital alone. If she had told me about it, I _____ with her.
| A．went | B．had gone | C．would go | D．would have gone |
Of all the books on the desk, ______ is of any use for study.
| A．nothing | B．no one | C．neither | D．none |
Sam _____ some knowledge of the computer just by watching others working on it.
| A．brought up | B．looked up | C．picked up | D．set up |