2. My sister went to Tay Ho village in Hue so that she could buy some bai tho conical hats. ( So that )
⇒ so that she could buy some bai tho conical hats
3. This museum is small. It has many unique artefacts. ( Although )
⇒ Although this museum is small, it has many unique artefacts.
4. This square is our favourite place to hang out. We have space to skateboard. ( Because )
⇒ This square is our favourite place to hang out because we have space to skateboard.
5. The villagers have to dry the buffalo skin under the sun. They make the drumheads. ( Before )
⇒ The villagers have to dry the buffalo skin under the sun before they make the drumheads.