I have many friends, some __________ are businessmen.
| A．of them | B．from which |
| C．of who | D．of whom |
The doctor persuaded the patient ____.Which statement is WRONG?
| A．not to smoke again | B．to stop smoking |
| C．to stop to smoke | D．into stopping smoking |
Johnny is a great dancer;he above the rest for his perfect performance.
| A．stand by |
| B．stands out |
| C．lives on |
| D．makes out |
—Would you mind my _______ your speech?
—Not at all. Go ahead.
| A．record | B．to record | C．recording | D．of recording |
The ability ________ an idea is as important as the idea itself.
| A．expressing | B．expressed | C．to express | D．to be expressed |
We were just about ready to leave _____ it started to snow.
| A．when | B．before | C．after | D．since |