We have subscribed to an evening newspaper.（英译中)

The reason why we have to grow trees is that they can supply fresh air for us.（英译中)

We have reason to believe that he was murdered.（英译中)

I have the right to ask for an explanation.（英译中)

We have three periods of chemistry a week.（英译中)

We have to play inside because it is raining.（英译中)

We were having breakfast.（英译中)