--Sit down, please．--___________.
| A．Thank you. | B．Good morning． |
| C．Hello． | D．Goodbye |
The hospital is new _____ very dirty.
| A．and | B．or | C．so | D．but |
What’s the weather ___ in summer ?
| A．like | B．is | C．cool | D．hot |
-David has made great progress recently.
-______, and ______.
| A．So he has; so you have | B．So he has; so have you |
| C．So has he; so have you | D．So has he; so you have |
WeBeijing next week.
| A．are leaving for | B．leave to | C．to leave to | D．left to |
The water in this river is harmful because It’s a ______ river.
| A．pollution | B．polluted |
| C．has polluted | D．pollutes |