reading listening writing speakingのうちどれが一番難しいのでしょうか。
yahoo answersで意見を聞いてみました。(外国語で)
Ans.1
For me it's speaking.
 I'm nervous I'll say something weird/incorrect and it's difficult to think of how to say things at a certain moment
(always get the ideas of what I COULD have said afterwards...)
Listening takes practice, but you can get into it after a while.
Writing can take a long time at the beginning, but at least you've got time to work out how to construct the sentences.
Reading is the easiest in my opinion.
 If there is a word you don't understand, you can most likely work it out by context,
and it's interesting to discover new things while reading,
 for example which words are used for a certain phrasal or getting to know the usages of the language better.
Source(s):
Italian student

英語をしゃべるのが難しいのは日本人だけじゃないんですね。イタリア人も。
やはりreadingが一番簡単ですね。推測できますからね。