there is/there are
It's basic English but since I haven't used such phrases for a long time, now I am not sure what is correct. so, what options are possible?
1) There are two beds in my bedroom and there is one in his.
2) There are two beds in my bedroom and one in his.
3) There are two beds in my bedroom and two in his.
4) There is one bed in my bedroom and two in his.
5) There is one bed in my bedroom and there are two in his.

Is omission of the second "there is/there are" acceptable and grammatically correct? or is it acceptable only in spoken language?

Question

there is/there are
It's basic English but since I haven't used such phrases for a long time, now I am not sure what is correct. so,  what options are possible?
1) There are two beds in my bedroom and there is one in his.
2) There are two beds in my bedroom and one in his.
3) There are two beds in my bedroom and two in his.
4) There is one bed in my bedroom and two in his.
5) There is one bed in my bedroom and there are two in his.

Is omission of the second "there is/there are" acceptable and grammatically correct? or is it  acceptable only in spoken language?

Answer

They are all fine, and all acceptable in any context.

The omissions aren't an indication of informality, and aren't a particular feature of spoken English. In fact, it is often seen as good style in written English to be as neat and economical as possible, and that can mean avoiding unnecessary repetition.

Answer

Hi Kate,

There are two beds in my bedroom and one in his / There is one bed in my bedroom and two in his.

As a native english speaker, I would feel that the verbs "are" and "is" are needed to quantify the bed(s) in the first part of each sentence. The quantity for the later part of the sentences can be inferred from the words "one" and "two".

I hope this helps.
Cheers, Lance