Martha and William work for that company. (that is)

• Đáp án: Martha and William work for the company that is very successful.
• Giải thích: Chúng ta thêm mệnh đề quan hệ "that is very successful" để bổ sung thông tin cho danh từ "company".

Katie is very proud of her brother, Jack. (whom)

• Đáp án: Katie is very proud of Jack, whom she admires very much.
• Giải thích: "Whom" dùng để thay thế cho tân ngữ chỉ người, trong trường hợp này là "Jack".

They talked to those union workers about the demonstration. (those are)

• Đáp án: They talked to those union workers who are on strike.
• Giải thích: Mệnh đề quan hệ "who are on strike" bổ sung thông tin cho danh từ "those union workers".

Jenny would apply for that sort of job. (that is)

• Đáp án: Jenny would apply for that sort of job that requires a lot of experience.
• Giải thích: Mệnh đề quan hệ bổ sung thông tin cho danh từ "that sort of job".

The children will participate in that competition. (in which)

• Đáp án: The competition in which the children will participate is very important.
• Giải thích: "In which" chỉ nơi chốn, dùng để nối hai mệnh đề.

Clara was listening to that radio programme. (that is)

• Đáp án: Clara was listening to the radio programme that is about music.
• Giải thích: Mệnh đề quan hệ bổ sung thông tin cho danh từ "that radio programme".

Who did you discuss the issues with? (with)

• Đáp án: The person with whom you discussed the issues is a professor.
• Giải thích: "Whom" dùng để thay thế cho tân ngữ chỉ người, trong trường hợp này là người mà bạn đã thảo luận vấn đề.

We're thinking of moving to a bigger house. (where)

• Đáp án: We're thinking of moving to a bigger house where we can have a garden.
• Giải thích: "Where" chỉ nơi chốn, dùng để nối hai mệnh đề.

The company made a profit on that sale. (on which)

• Đáp án: The sale on which the company made a profit was very successful.
• Giải thích: "On which" chỉ nơi chốn, dùng để nối hai mệnh đề.

You can't rely on that type of information. (which)

• Đáp án: You can't rely on that type of information which is often inaccurate.
• Giải thích: Mệnh đề quan hệ bổ sung thông tin cho danh từ "that type of information".