We should protect the earth because it's home to ____ animals.
| A．million | B．millions |
| C．million of | D．millions of |
Here comes the bus. Let’s ________.
| A．get on it | B．get it on |
| C．to get on it | D．to get it on |
The students have two days ________ in a week.
| A．on | B．over | C．off | D．of |
—There are some differences between American English and British English.
—Right. “Autumn” means “________” in American English.
| A．soccer | B．fall | C．eraser | D．Elevator |
-- Happy birthday to you, Joan! -- ____________.
| A．That’s all right | B．Thank you |
| C．You’re welcome | D．The same to you |
-- What is your cousin like? -- ___________
| A．He is tall. | B．He is a student. |
| C．He is 14. | D．He likes reading. |