(1) It's a sight which I'll never forget

(2) What do you feel about this friend and which of his or her qualities do you see in yourself?

(3) I offered him a drink, which he accepted

(4) It was a crisis for which he was totally unprepared

(5) Which friend can I go with?

(6) He lied, a mistake for which he paid dearly

(7) The game can also end if the stock runs out of cards, in which case the result is a draw.

(8) They return to spawn in the same stream in which they were born, and die a few days later.

(9) There are ten teams in this competition, which is being held here this year

(10) Which is your bag?

(11) There he had a nest over the window of a house in which dwelt the writer of fairy tales.

(12) Which was worse - the cold or the hunger?

(13) We know which of the three books sold best

(14) Which are the best varieties of grapes for long keeping?

(15) She asked me to leave, which I did

(16) Which of the suspects murdered him?

(17) It is often used to refer to a sort of social meeting in which it is pleasant to be together.

(18) You really must have your own work area which can be cut off from the rest of the house.

(19) I want to be an actor or a musician and I don't mind which

(20) Which is your favourite poet?