单句改错

Only by this way can you stay slim．

单句改错

Building a big dam cost us a lot of money, but it is beneficial in a long term．

单句改错

It isn’t worth of my effort to talk her into joining us in the camping．

单句改错

I recognized Tommy’s voice at the moment I picked up the phone．

单句改错

Our school has built up two buildings for the teachers．

单句改错

The policeman found a frightening child in the hut．

单句改错

During the year, the professor paid attention to improve agriculture．

单句改错

Give me the red pen instead the blue one．

单句改错

The company is in charge of him．

单句改错

How did you do with the money we left?