`11`. I was waiting for a man who didn't turn up.
`->` "who" thay cho chủ ngữ chỉ người
`12`. This is the house where I was born.
`->` "where" thay cho từ chỉ nơi chốn
`13`. A bulding which was destroyed in the fire has now been rebuilt.
`->` "Which" thay cho vật
`14`. A girl who was injured in the accident is now in hospital.
`->` "who" thay cho chủ ngữ chỉ người
`15`. A bomb which went off this morning caused a lot of damage.
`->` giải thích tương tự câu 13
