你好 Hello!

你好. 我叫叶普. 我會說英文和荷蘭語文 [Not wrong, but I prefer not to repeat the same word if possible]. 我喜歡學習中國文, . 我也很喜歡中國菜. 再見!

中國 means China.  Chinese as a language, food, etc, just prefix with a 中 is good enough.   Care and sensitivity are needed because of the current political situation of mainland China, Taiwan and even with the overseas Chinese communities.  A good example would be "Chinatown".  To translate it as 中國城 would be dead wrong.  It's OK for the Chinese coming from the mainland.  To an American born Chinese, it can be construed as unpatriotic to his home country.  唐人街 and 華埠 are the better terms.  Even as a race, people can be very sensitive.  Best to use 華人 instead of 中國人 (unless he's from China).  It is like saying you are from Holland rather than from the Netherlands.

你好 Hello!

你好. 我叫叶普. 我會說英文和荷蘭語（''語'' means language,''文''means written). 我喜歡學習中文. 我也很喜歡中國菜. 再見!

你好 Hello!

你好. 我叫叶普. 我會說英文和荷蘭文. 我喜歡學習中國文. 我也很喜歡中國菜. 再見!

上面这样表达也可以，但一般我这样表达：

你好 Hello!
你好. 我叫叶普. 我會說英语和荷蘭语. 我喜歡學習中國文. 我也很喜歡中國菜. 再見!

你好 Hello!

你好，我(的名字)叫叶普。我會說英文和荷蘭文。我喜歡學習中文，我也很喜歡中國菜。有機會再見!