Отметьте грамматически правельные предложения знаком "+", а неправильные знаком "-" 1.what did you do last night? what have you done last night? 2.i went to many countries in my life. i have been to many countries in my life. 3.he went to greece two years ago. he has been to greece two years ago. 4.i study english for three years. i have studied / have been studying english for three years. 5.i have known mary for three weeks. i have known mary since three weeks. 6.where have you bought your shoes? where did you buy your shoes?

1.what did you do last night?

    what have you done last night?

2.i went to many countries in my life.

    i have been to many countries in my life.

3.he went to greece two years ago.

    he has been to greece two years ago.

4.i study english for three years.

    i have studied / have been studying english for three years.

5.i have known mary for three weeks.

    i have known mary since three weeks.

6.where have you bought your shoes?

    where did you buy your shoes?

1.  when will the first 20 containers be delivered? -  the first 20 containers will be delivered end june after full deposit received on time. 2. what need  the buyer to do when the containers had been produced and completed in fulfilling this contract? -  when the containers had been produced and completed in fulfilling this contract, the buyer need to receive the tank or to provide information for the seller to deliver the containers to her specified location within 30 days from day of completion.  3. what  shall be treated as refusal to receive the containers? -  postponement of delivery date beyond the 30 days’ grace period by the buyer, despite of all reasons other than for reason of quality failure of the containers, shall be treated as refusal to receive the containers. 4. what do the seller and the manufacturer warrant? -  the seller and the manufacturer warrant that each container will be built to the specification and requirements of the contract, and will be free from defect in workmanship, materials and design. 5.which  responsibility is it to cross-reference and confirm the agreed specification? -    it is the buyer or user’s responsibility to cross-reference and confirm the agreed specification is suitable for their intended cargo and usage. 6. what should the buyer always directly seek? -  the buyer should always directly seek the relevant supplier for any technical or sales support for the component.