八年级英语书上册67面3a3b的答案

仅供参考：
3a
1.I might watch TV.
2.I might practice the violin.
3.I might finish it on the weekend.
4.I might go with my cousin.
5.Sorry,I'm not available.I might visit my grandparents.
3b
1.Can you play tennis with me?
Sure,I'd love to.
2.Would you like to go to the movies tonight?
Sorry,I'm not free.
I might have to look after my sister.
3.Can you hang out with us tonight?
Sorry,I have no time.
I must study for a test.
4.Would you like to come to my birthday party?
Sure.I'd love to.