6 Замените модальные глаголы на соответствующие эквиваленты: 1 The students cannot do this work without their teather’s

1) The students are not able to do this work without their teather’s help. 

2) The atom have to serve mankind.

3) You are allowed to take my car, if you want.

4) We are able to discuss this problem just now.

5) The lecture have to begin in time.

6) Am I allowed to phone you tonight?