Переведите на англ плииииииииз только с помощью своих знаний,без переводчика

You should be more attentive.
They can not take this decision themselves.
Doctor will come tomorrow and solve this problem.
We have to speak with the manager tomorrow, because he has already left today.
Can you help me?
Yesterday children were allowed to swim.

You should pay more attention.
They can not to make a decision themselves
Principal will come tomorrow and resolve the problem.
We would need to talk to the manager tomorrow since he already left.
Can you help me?
Kids were allowed to swim yesterday.

Вставлю и свои пять копеек, если позволите )))
You should be more attentive.
They needn't make this decision themselves. Если я верно поняла смысл, то перевод именно такой. А предложние They can't make this decision... переводится как Они не могут сами принять это решение. А это уже немного не то. Смысл другой.
Tomorrow the director will arrive and solve this problem.
We'll have to talk to the administrator tomorrow because today he has already gone.
Can you help me?
Yesterday the children were allowed to bathe.

You should be more attentive.
They can not make this decision their own
The Director will come tomorrow and settle this problem.
We will speak to the manager tomorrow, because he has already gone home.
Can you help me please?
children were allowed to swim yesterday

Тебе следует быть более внимательным. - You should be more careful
Они могут не принимать это решение сами. - Thy don't have to make a decidion on their own
Завтра приедет директор и решит эту проблему. - The director is going to come tomorrow and solve the problem.

Нам придется поговорит с управляющим завтра, потому что сегодня он уже ушёл. - We have to talk to the manager tomorrow because he has already left.

Ты можешь помочь мне? = could you help me?

Вчера детям разрешили купаться. - Yesterday children were allowed to bath(swim)

You should be more attentive
They can don't make this decision by themselves (тут немного сомневаюсь насчёт don't)
The director will come and solve this problem tomorrow

It is necessary to us to talk to the director because he has already gone

can you help me?
The children were allowed to bathe yesterday