1/ The Minister, ..who.. was appointed just last week, made no comment on the situation.
2.Isn't that the spot ..where.... the accident happened last night
3. The human brain,....which..... weighs about 1.400 grams, is ten times the size of a balloon's
4. There are several reasons ...why... I don't want to see Michael tonight.
5. This is the office ...where.... I work.
6. The new girl in our class, ...whose.. name is Alexandra, seems really nice.
7 The Titanic, ..which.. people said to be unsinkable ( không thể chìm ) , sank on her maiden voyage.
8/ All people to ...whom.. the e-mail eas sent replied.
9/ April 1st , ....when.. we play tricks on people, is known as April Fools' Day.
10/ Harry hill, ....which..... new series starts next week, is one of my favourite comedians.
11. A very popular breed of dog is the German Shepherd, ...which... is often used as a guard dog.
12/ Blackpool Tower, ..which... was modeled on the Eiffel Tower, is a very well-known.