________ tigers in the world has reduced(减少) in the last fifty years．
| A．A number |
| B．The number |
| C．A number of |
| D．The number of |
Can you ________ it ________ English?
| A．speak, in | B．tell, with | C．talk, with | D．say, in |
We can ________ some food________ the supermarket.
| A．sell, to | B．buy, from | C．sell, from | D．buy, to |
We have sweaters ________ all colors ________ ￥50 each.
| A．in, for | B．at, in | C．in, at | D．at, at |
________ your mother ________ carrots?
| A．Do; eat | B．Is; eat | C．Are; eat | D．Does; eat |
Let’s ________ and ________ football on the playground.
| A．to go, to play | B．go, play | C．to go, play | D．go, to play |