Question

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.                                                        

Answer 1

1) Need
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