пожалуйста помогите с английским.

Пожалуйста помогите мне найти
а)предложения с модальными глаголами
б)предложения, где сказуемые используются в страдательном залоге.

An offer (a quotation) is a statement by the Sellers usually in written form expressing their wish to sell the goods. But it is not legal document i.e. if the Sellers for this or that reason decide not to sell, the Buyers have no legal remedy. An offer is only the first step in a contract.
Offers (quotations) will as a rule include the following information:
a) the description of the goods offered (their quality, quantity)
b) details of prices, discounts and terms of payment
c) the date or the time and place of delivery
There may be different kinds of offers.
Sometimes the Sellers may offer their goods to their regular customers without waiting for an inquiry or they may be forced to take the initiative under present competitive conditions and to send their quotation to those who may be interested in their goods. These are voluntary offers of sometimes they are called free offers. They were formerly called offers without obligations. In this case there must be an indication in the offer that it is made subject to the goods being unsold (available) when the order is received. The opening phrases in voluntary offers may be: “We think you will be interested in our quotation for the goods” or “We have pleasure in enclosing our latest catalogue (or the price-list of our products)”.

То что я нашел-Sometimes the Sellers may offer their goods to their regular customers without waiting for an inquiry or they may be forced to take the initiative under present competitive conditions and to send their quotation to those who may be interested in their goods