[Grammar] the classroom

[Ashiuhto]

Is the following sentence acceptable?

Is this the classroom in which they studied last year?

 

[freezeframe]

Is the following sentence acceptable?

Is this the classroom in which they studied last year?

Yes.

 

[Ashiuhto]

Next, is the following sentence acceptable?

Is the classroom in which they studied last year?

 

[freezeframe]

Next, is the following sentence acceptable?

Is the classroom in which they studied last year?

No.

 

[Verona_82]

Not a teacher.

I'd say "Is this the classrom where they studied last year?'

 

[riquecohen]

Not a teacher.

I'd say "Is this the classrom where they studied last year?'

That's fine too.

 

[5jj]

Also fine:

Is this the classroom which they studied in last year?
Is this the classroom that they studied in last year?
Is this the classroom they studied in last year?