However difficult (it is) to learn...

[Tan Elaine]

Mr Lee said, "However difficult (it is) to learn the mother tongue, especially Chinese together with English, if children start early enough from kindergarten or even nursery by Primary 6, they will be bilingual, with a strong foundation in the mother tongue for life,

Should 'it is' be used or is it not necessary?

Thanks.

 

[Tan Elaine]

Could somebody please help? Many thanks.

 

[5jj]

We need 'it is'.

 

[Tan Elaine]

Hi 5jj

I appreciate very much your reply to my question.

I would also like to congratulate you on being appointed 'moderator'.

 

[5jj]

Thank you.