The backpack is 25 yuan each. I buy two for ______ yuan.
| A．twenty | B．thirty | C．fifty | D．sixty |
Friday is __________ birthday of my grandma’s.
| A．eighty | B．the eightieth |
| C．eightieth | D．the eighty |
Look! ______students are doing sports on the playground.
| A．Hundreds | B．Two hundred |
| C．Hundreds of | D．Two hundreds of |
______black—headed gulls(红嘴鸥) come to Kunming to spend their winter every year.
| A．Thousands | B．Thousands of |
| C．Thousand of | D．Thousand |
Every year there are about _______ people waiting for their trains back home in the railway station before Spring Festival comes.
| A．five thousand of | B．five thousand |
| C．thousand of | D．five thousands of |
My mother told me that my homework must _______ on time.
| A．finish | B．be finish |
| C．be finished | D．finishes |
The old should _____ well.
| A．be take care of | B．look after |
| C．be looked after | D．be taking car of |
A library with five thousand books ______ to the nation as a gift.
| A．is offered | B．has offered |
| C．are offered | D．have offered |
The room must _____ up right now. It’s too dirty.
| A．be cleaned | B．be cleaning |
| C．clean | D．cleaned |