Вопрос № 1208708 - Английский язык

Заполните пропуски в письме следующими фразами
1_____________:
Accordingly to our records payment of our invoice № 35823, sent to you in April, has not yet been made.
As specified on all our estimates and invoices our terms of business are 30 days net. Your invoice has now been outstanding for 90 days. 2_______________ it is our company policy to take legal action.
We would naturally prefer not to have to go so far. 3______________ a check by return. In case you have lost or mislaid the original I am enclosing a copy of our invoice.
4_____________ receiving your payment by return.
Yours sincerely,
P. Lacoste
Credit Controller

Заполните пропуски в письме следующими фразами
1_____________:
Accordingly to our records payment of our invoice № 35823, sent to you in April, has not yet been made.
As specified on all our estimates and invoices 2________________ days net. Your invoice has now been outstanding for 90 days. In the case of unsettled debt of this duration it is our company policy to take legal action.
We would naturally prefer not to have to go so far. 3______________ a check by return. In case you have lost or mislaid the original I am enclosing a copy of our invoice.
4_____________ receiving your payment by return.
Yours sincerely,
P. Lacoste
Credit Controller

Какая фраза из второй колонки может быть окончанием предложения Let me know if

Какое слово является формой глагола to be?

Какое слово не является существительным

В предложении I am obliged to inform her измените подлежащее на местоимение 2 лица множественного числа. Найдите правильный вариант.