So suddenly ________that the animals in the zoo looked very frightened during the total solar eclipse (日全食)．
| A．did the sky turn dark | B．the sky did turn dark |
| C．turned the sky dark | D．was the sky turned dark |
—I wonder if Tina __________ our conference.
—So do I. I'll ring you up if she __________.
| A．attends ； comes |
| B．will attend ； comes |
| C．attends ； will come |
| D．will attend ； will come |
—Which of the four sweaters will you choose?
—__________. They look nearly the same, and I just need one.
| A．None |
| B．All |
| C．Either |
| D．Any |
—Mummy, could you buy me a skirt like this?
—Certainly. We can buy __________ one than this, but __________ this.
| A．a better ； better than |
| B．a good ； as good as |
| C．a cheaper；as good as |
| D．a more expensive ； not as good as |
It's so nice to hear from her again. __________, we last met more than thirty years ago.
| A．What's more |
| B．That's to say |
| C．In other words |
| D．Believe it or not |
—The government is thinking about reforming the health care system. I think it's a good point.
—__________. I think it's really a good idea.
| A．I don't agree with you |
| B．I couldn't agree more |
| C．I'm not sure about that |
| D．You can't be serious |