—It’s time that I ____ on night duty. I must be off now.
—I’d rather you ____ at home on such a family reunion night.
| A．am, stay | B．was, stayed |
| C．will be, to stay | D．be, will stay |
Ashes from the fire fall on the ice surface and _______ more radiation from the sun.
| A．take in | B．bring in | C．put in | D．go in |
As an employee, I couldn’t help but ______ still for hours as the boss told me to.
| A．stood | B．stand | C．to stand | D．standding |
Julie was good at German, French and Russian, all of _____ she spoke fluently.
| A．who | B．whom | C．which | D．that |
The scientific research on how to protect the rare animals is ________. Many scientists are working hard to find new way to raise the animals by man.
| A．in danger | B．in control | C．in order | D．in progress |
Michael __________ here to see you and he____________ a note on your desk.
| A．has come; had left | B．has been; has left |
| C．has come; left | D．has been; left |