How to say in Czech: Do we need his mobile number?

English
Do need
Czech
Potřebujeme jeho mobilní číslo?
What is his telephone number?
We do not need his mobile number.
We need his mobile number.
Did we forget his mobile number?
Do we have his mobile number?
Do we know his mobile number?
Do we want his mobile number?
We do not have his mobile number.
We do not know his mobile number.
We forgot his mobile number.

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