--改错,英语题--

I had (a) wonderful time in Hangzhou.
(The) Yangtze River is the longest river in China.

I had a wonderful time in Hangzhou.
Yangtze River is the longest river in China.

I had a wonderful time in Hangzhou.
第二句按楼上的，
Yangtze River is one of the longest rivers in China.

注意冠词的用法：
I had a wonderful time in Hangzhou.
The Yangtze River is the longest river in China.

I have had wonderful time in Hangzhou.
Yangtze River is one of the longest rivers in China.

1)I had a wonderful time in Hangzhou
2)Yangtze River which is the longest river in china.