$14.$ I recently went back to Paris, where is still as beautiful as a pearl.

- "where" là TTQH thay thế cho nơi chốn.

$15.$ I recently went back to Paris, in which I was born nearly 50 years ago.

- in which chỉ nơi chốn.

$16.$ Do you know the music which is being played on the radio?

- "which" chỉ vật.

$17.$ The day when she left was rainy.

- "when" là TTQH chỉ ngày.

$18.$ That man, whose name I don’t remember, is an artist.

- "whose" là ĐTQH chỉ sự sở hữu.

$19.$ That car, the engine of which is very good, belongs to Dr. Clark..

$20.$ This is Mrs. Jones whose son won the championship last year.

- "whose" là ĐTQH chỉ sự sở hữu.

$21.$ Rod Lee who I know his sister has won an Oscar.

- "who" là ĐTQH chỉ người ở vị trí chủ ngữ.

$22.$ 7.05 is the time when my plane arrives then.

$23.$ Last week I went to see the house which I used to live in it.

$24.$ Hoan Kiem lake is a historical place whose water is always blue.