Thank you,

Today we had a free talk because I don't have the book.

I use to work in the office, but today I was in the experimental room.

I attended the conference last week to present my research.

That is a kind of semiconductor material for electronic & Optoelectronic devices.

I think my English conversation is improved by your teaching and practice.

Actually, I don't have much time to speak English at my work.

But reading and writing are common things for my study.

Today we had a free talk because I don't have the book.

I used to work in the office, but today I was in the experimental room.

I attended the conference last week to present my research.

That is a kind of semiconductor material for electronic & Optoelectronic devices.

I think my English conversation is improved by your teaching and practice.

Actually, I don't have much time to speak English at my work.

But reading and writing are common things for my study.