补全对话根据下面的对话情境，在空白处填上一个适当的句子，使得对话完整
A:,Tony , Long time no see! ?
B:I went to Ping yao, Shanxi with my daughter.
A: ?
B: We stayed there for two weeks.
A: ?
B:We visited the old city walls in Pingyao.
A:Old city walls? I heard of them, but I didn’t go there. ?
B:We also tasted many different kinds of food. They were really delicious. And we
enjoyed some shows there.
A: ! I will take my son to visit there next year.
大卫的成功不是偶然的，那是他艰辛努力的结果．
David's success didn't come ．It was the result of his hard work．
中国终于有了自制的航空母舰，这确实值得骄傲．
China has owned its first homemade aircraft carrier finally．That's really something to be ．
If you want to become thinner，you'd better eat less before you go to bed．（改为同义句）
If you want to weight，you'd better eat less before to bed．
It will be 20 years since Hong Kong returned to China on July 1，1997．（就划线部分提问）
years will it be since Hong Kong returned to China on July l，1997？
孩子们高兴地在那儿互相扔雪球．
The children are happily snowballs each other over there．