Can I say: When filling this form, you are required to choose your country.

[Yog]

Hi,

Can I say:
When filling this form, you are required to choose your country.

Thanks,
Yog

[matilda]

you can say that.
but the sentence looks more beautiful when you change the place of these two sentences.

you'd better bring the second one first, and say:
You are reguired to choose your country when feeling this forms.

and yoiu can say: you are expected/wanted to choose your country when filling this form


hope that helps

Matilda

[Tdol]

You can, though if it's an online form, it normally just has the title country above the drop-down box and an asterix to show it is a required part of the form.