Поставьте предложения в отрицательную и вопросительную формы. 1. we demand payment of penalty in accordance with clause 16 of the contract. 2. i shall send all the documents by e-mail. 3. they protected their trademark against counterfeiters. 4. i have just telephoned moscow. 5. we are setting up a new office in argentina. 6. the contract can be signed in two days. the law of demand describes the relationship between prices and the quality of goods.

1.    We do not demand payment of penalty in accordance with clause 16 of the contract.
       Do we demand payment of penalty in accordance with clause 16 of the contract? 2.     I shall not send all the documents by e-mail.
        Shall I send all the documents by e-mail?
3.     They did not protect their trademark against counterfeiters.
        Did they protect their trademark against counterfeiters?
4.      I haven’t just telephoned Moscow.
         Have I just telephoned Moscow?
5.      We are not setting up a new office in Argentina.
         Are we setting up a new office in Argentina?
6.      The contract cannot be signed in two days.
         Can the contract be signed in two days?
7.      The law of demand doesn’t describe the relationship between prices and the                quality of goods.
         Does the law of demand  describe the relations between prices and the quality            of goods?