在表格中选择合适的词语,使句子通顺合理
of ,with,at,in,on ,Thank you,must,doing
1、 There is something wrong ________ my watch.
2、They go to the park _________ weekends.
3、This is an old photo __________ my family.
4、Mike usually gets up _______ __ 6:45.
5、We _______ go home now.
6、We plant trees ________ spring.
7、“ What is he _______?” “ She is reading.”
8、A：Happy birthday to you!B：____________.