1. They were sitting around the table.

2. They were sitting round the table.

3. The man turned around and looked at us.
4. The man turned round and looked at us.

[Can we use both 'around' and 'round' in the sentences?]

2 answers

no first one and third one is true
Hammaad is right. 1 and 3 are best. The word is "around". When people say, as they do, 'round the table, they are merely eliding (skipping) the "a". It's very, very casual and sloppy.