4. The artisan moulded the cooper so that he/she could make a bronze drum.

-> so that S V (chỉ mục đích : để)

5. Before you want to knit a hat for your friend, you should watch tutorials on Youtube.

-> Before : trước khi

6. While I was clearing out my cupboards, I found these photos.

-> while : trong khi

7. I told the absolute truth, but no one would believe me.

-> but : nhưng

8. I'm learning Japanese and I like it.

-> and : và