Should Rahul talk to me?/ Shall Rahul talk to me?

He should have a pen./ He has to have a pen.

Who all shall I meet?/ Who all do I meet?

Everyone ought to speak the truth./ Everyone should speak the truth./ Everyone must speak the truth.

He should have at least something to speak./ He has to have at least something to speak.

He should have had at least something to speak. / He had to have at least something to speak.

We should have at least 2 years’ experience./ We have to have at least 2 years’ experience.

We should have had at least 2 years’ experience. / We had to have at least 2 years’ experience.

Why shall I not go there?/ Why do I not go there?

He should have had a good job./ He had to have a good job.

He must go there.

He must go to the hospital to see his father.

Should I go there? / Shall I go there?

Shall I talk to him?/ Do I talk to him?

Shall I call you in the evening?/ Do I call you in the evening?