填空：用动词的正确形式填空（每小题1分，共5分）
Three of the students    (chat) in the classroom now, but the others aren't.
This basket of vegetables    (weigh) about seven kilograms.
Why not    (1ie)on the sofa to have a rest?
___they ____(hold)a party for the exchange students yesterday afternoon?
-    the students of Class 1 Grade 8    (give)a fashion show tomorrow?
- Yes，they are.