Describe your favorite vacation destination.
I like go to beach. There is very beautiful and I can swimming.
语法错误：应为"I like to go to the beach"和"I can swim"。
缺少定冠词"the"，并且动词形式使用错误。
What do you think about online learning?
I think online learning have advantage and disadvantage.
主谓一致错误：应为"online learning has advantages and disadvantages"。
可数名词应该用复数形式。
How often do you exercise?
I exercise three times in a week. I usually running in the park.
介词使用错误：应为"three times a week"。
动词形式错误：应为"I usually run in the park"。