--- Tom, what do you think is the secret ____ writing in English?
---- ____ reading lots of English activities, you can improve it a lot.
| A．with, About | B．to, About | C．with, By | D．to, By |
Aunt Huang gave all her saving(积蓄)to the Hope School she herself was not rich.
| A．because | B．as if |
| C．although | D．for |
Books by computers in the future.
| A．are replaced | B．are being replaced |
| C．have been replaced | D．will be replaced |
When he saw his old friend, he stopped with him.
| A．talk | B．talking |
| C．to talk | D．talked |
Betty to represent our school to take part in the Maths Olympics.
| A．chooses | B．has chosen |
| C．has been chosen | D．were chosen |
If there _____no buying and selling of a nimals, there___ no killing in nature.
| A．is ; is | B．will be ; will be |
| C．is ; will be | D．will be ; is |