你好,很高兴为你解答.
保证正确率~!
正确答案是：1.I【 was】fat then.I【 am】thin now
2.We【 were】short then.We【 are】tall now
3.The book【 was】new then.It【 is】old now.
4My grandparents【 weren't 】old then.They【 were】young then.
5.She 【 is】loud now.She 【 is】quiet now.
6.Where【 was】the food then?
It【 was】on the second floor then.
7.Where【were】the vegetables then?
They 【were】on the first floor then.不懂请追问,(*^__^*) 嘻嘻~~望采纳,祝开心~!