We (not to want) to believe he (to be laughed at) by your friends

ответ:

we don't want to believe he was laughed at by your friends

they will have planted trees in their garden by 7 o'clock tomorrow в future in the past будетиметьтакойвид: they would have planted trees in their garden by 7 o'clock tomorrow. соответственно вопросы будут следующие:

would  they have planted trees in their garden by 7 o'clock tomorrow?

would  they have planted trees or flowers in their garden by 7 o'clock tomorrow?

who would  have planted trees in their garden by 7 o'clock tomorrow?

what would  they have planted in their garden by 7 o'clock tomorrow?

where would  they have planted trees by 7 o'clock tomorrow?

when would  they have planted trees in their garden?

what would  they have done in their garden by 7 o'clock tomorrow?

they would have planted trees in their garden by 7 o'clock tomorrow, wouldn’t they?  

я думаю, что работа( всё в таком духе) после школы для детей полезна, потому что они учатся хорошим привычкам: как не опаздывать, как быть ответственными и самостоятельными. она (работа) учит детей зарабатывать на те вещи, которые они хотят (купить имеется в виду) , а не просто ждать своих маму и папу, чтобы они им их купили.