- Air quality in our city is becoming worse and worse.
- Yes. These days' PM2.5 readings are frightening. We must do something to _______ air pollution.
| A．reduce | B．remove | C．collect | D．gather |
The sweet smell of the flowers in the garden comes in_______the open window，making us feel in a good mood(心情)．
A．on
B．with
C．through
用所给词的适当形式填空。
What an________(embarrass)moment it is！I want to leave the room at once．
Did you know that the earth is home to________animals？
| A．million |
| B．millions |
| C．million of |
| D．millions of |
The little girl was________nervous that she couldn’t say a word in public．
| A．so |
| B．such |
| C．too |
| D．very |
—How long have Mr．and Mrs．Smith________？
—For more than twenty years．
| A．married |
| B．had married |
| C．got married |
| D．been married |