Jane is obliged to be at work at nine o’clock. (have to)​

Jane has to be at work at nine o'clock.

•our inform    wants to   protect the   environment.

•  we fight against water and air    pollute

•are you unhappy with the ecological situate  in your region?  

•send us some organise  about it and we`ll try to help. 

the teacher said to jack that she know that he worked hard and then told him that he's a good boy.

the old man said to the girl, that she's can sing perfectly and that he think that she will be a famous singer

my sister said to me that i looked yesterday and that she think i have recovered after my illnes

the guest said to me that everything is tasty and that im an excellent cook..

the student said that he/she cant answer this question, because he/she dont understand it.