第1个回答 2012-09-20
It's because I consider it difficult.
第2个回答 2012-09-20
翻译为:
Because I think it's difficult.
第3个回答 2012-09-20
because it's very hard for me.
第4个回答 2012-09-20
Because i feel it is very difficult.
第5个回答 2012-09-20
It's because I think it is hard.