1. The new manager wondered if to adopt a new technology from their partner in the UK.
=> Whether (Whether + To V còn If thì không)
2. Dragon Bridge in Da Nang is the must-see for all lovers of architecture.
=> A (Dragon Bridge là 1 vật xác định nên ko dùng The)
3. Po Nagar Kalan is the main tower, that is one of the tallest Cham structures.
=> Which (Có dấu phẩy nên ko dùng That)
4. We cleaned all the kitchen while our parents were out to dinner.
=> The whole (The kitchen là số ít nên ko dùng all, thay vào đó dùng The whole/ The entire)
5. Sometimes our efforts on protecting man-made wonders of the city aren’t full appreciated.
=> Aren't fully (Trước V ta dùng Adv)
`\text{Chúc bn hk tốt!}`