Вставьте модальные глаголы can, may, must или need. 1.) Why … not you understand it? It is so easy. 2.) … we do the exercise t once? – Yes, you … do it at once. 3.) ... you pronounce this sound? 4.) You … not have bought this meat: we have everything for dinner. 5.) I ... not go out today: it is too cold. 6.) ... I take your pen? — Yes, please. 7.) We ... not carry the bookcase upstairs: it is too heavy. 8.) We ... not carry the bookcase upstairs ourselves: the workers will come and do it. 9.) When ... you come to see us? — I ... come only on Sunday. 10.) ... you cut something with