1. I love travelling to new places so I'm visiting the USA this summer.

Clause + so + clause: vì vậy 

2. He wants to buy a gift but the shop was closed.

Clause + but + clause: nhưng 

3. We can go to the beach or the mountains.

or: hay / hoặc (dùng cho sự lựa chọn)

4. Although this is his trip to Vietnam, he knows a lot about the local culture.

Although + clause, clause: mặc dù 

5. Shaking your head to say "no" in Bulgaria means "yes" so you shouldn't do that.

Clause + so + clause: vì vậy 

6. Although the weather was cold, he offered me an ice cream. 

Although + clause, clause: mặc dù 

7. If you respect their customs, they will feel better.

If 1: if + HTĐ, TLĐ

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