1. It has taken the Browns a lot of time to wander around the city.
Giải thích: cấu trúc It takes(có chia) sb time to do sth.
2. This painting was embroidered beautifully by the villagers.
(bị động thì quá khứ đơn)
3. He asked me which was the most liveable city in Vietnam.
(câu gián tiếp)