--Will you join us to play basketball on Saturdy afternoon?---______,but I promised to go swimming with Eric.
-There is someone knocking at the door. - It ______ be Jimmy, he has gone to ShangHai .
- Why didn’t Sally play the violin at the concert last night? - She said that her hand hurt,but that was only a(n) ____.I saw her play tennis just now.
All the students are talking and laughing in the classroom and it’s______ .
MR. Lin’s son is pretty good_____ drawing pictures and won many prizes.
Hurry up, or______ won’t get to school on time.