These continual _____ in temperature make it impossible to decide what to wear.
| A．alterations | B．vibrations | C．waves | D．fluctuations |
There, ____ Mrs. Tailor, stretching out to gather her precious eggs laid by her hen.
| A．standing on a wooden box was | B．was standing on a wooden box |
| C．on a wooden box was standing | D．was on a wooden box standing |
—Hello, John. This is Alice. I'm calling from work. How's your mother feeling?
—________. Mum is out of hospital, but she has to stay in bed a few more days.
| A．You're welcome | B．That was thoughtful of you |
| C．What a pleasure | D．By all means |
Don’t you know ______, my dear friend, it is you that she loves?
| A．who | B．which | C．that | D．what |
Who ________ a lady like Susan Boyle, once an ordinary woman in Scotland, would achieve overnight success at Britain’s Got Talent Show?
| A．might think | B．could think |
| C．could have thought | D．must have thought |
What will people die of in 100 years? If you think that is a simple question, you ______ attention to the revolution taking place in biotechnology.
| A．have not been paying | B．had not been paying |
| C．were not paying | D．will not be paying |