..... as taste is really a composite sense made up of both taste and smell.
A. that we refer to
B. to which we refer
C. what do we refer to
D. what we refer
Đáp án: D
Giải thích: - Không thể sử dụng "that; to which" ở đầu câu trong trường hợp này vì nó sai ngữ pháp và nghĩa của câu
- Không sử dụng C vì không thể dùng TĐT trong trường hợp này; nếu sử dụng thì câu sẽ sai ngữ pháp.
Dịch: Cái mà chúng ta gọi là vị giác thực sự là một cảm giác tổng hợp được tạo thành từ cả vị giác và khứu giác.
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