I don’t allow ______ in my office and I don’t allow my family ______ at all.
| A．to smoke…smoking | B．smoking…to smoke |
| C．to smoke…to smoke | D．smoking…smoking |
A great idea suddenly _______ to me that I might use the pocket money to buy a tie for my father’s birthday.
| A．passed | B．happened | C．struck | D．occurred |
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 |