2.grammar. the usa is a multicultural country. paul and his friends celebrated international day at his school. some pupils were showing folk dances from countries all over the world. (0) what dances /they/perform? what dances were they performing? (1)they /wear/tational costumes? . some pupils were singing songs. (2) what songs / they/sing (3) what food /the children /eat? (4) anyone /eat/traditional russian food?