Вставьте модальные глаголы may, can, must, need. 1. there are no buses or taxis, so we walk. 2. i.. not go out today: it is too cold 3. i use your telephone? 4. i ask the chief to put off my report: it is impossible to do anything in such a short time! 5. what time is it? it be about 6 o'clock, but i am not sure. 6. we «.. not live without food and water.
2) can
3) may
4) need (must) зависит от степени важности действия.
5)must (it must be 6 )
6) can, must (зависит так же как в 4)
4 и 6 я бы поставил need и can