—How is the weather in winter in Bejing?
—It’s ________.
| A．warm | B．hot | C．cool | D．cold |
The number 6,743,234,123 is read ____ .
| A．Six billion, seven hundred and forty-three million, two hundred and thirty- four thousand, one hundred and twenty-three |
| B．Six billion and seven hundred and forty-three million and two hundred and thirty four thousand and one hundred twenty-three |
| C．Six billion and seven hundred and forty-three million and two hundred and thirty four thousand and a hundred and twenty-three |
| D．Six billions, seven hundreds and forty-three millions , two hundreds and thirty -four thousands a hundred and twenty-three |
I ____ my clothes when my father got home.
| A．wash | B．washed |
| C．am washing | D．was washing |
We should protect the earth because it's home to ____ animals.
| A．million | B．millions |
| C．million of | D．millions of |
The police told the boys ____ in the street .It was dangerous.
| A．don’t to play | B．to not play |
| C．not to play | D．not play |
— What about going to the zoo by bus? — ____.
| A．A little | B．It doesn't matter |
| C．That's bad | D．Good idea |