______ a pair of compasses, it is easy to describe a circle.
| A．Having | B．To have had | C．If you have | D．If having |
The hurricane damaged many houses and business buildings; ______， it caused 20 deaths.
| A．or else | B．therefore |
| C．after all | D．what's more |
She knows that as a secretary she must be pleasant and helpful no matter how busy she is or what kind of ______she may be in.
| A．mood | B．mind | C．form | D．thought |
John has got a fever these days, and he says he doesn't want to see a doctor, but I'm afraid he has no______.
| A．alternative | B．extra |
| C．treatment | D．possibility |
John's careless driving nearly ______him his life.
| A．cost | B．caused | C．took | D．lost |
—I'm afraid I can't finish the book within this week.
—______.
| A．Please go ahead | B．That's right |
| C．Not at all | D．Take your time |