41/ A building, which has been now rebuilt, was destroyed in the fire.
42/ The police never found the money which was stolen in the robbery.
43/ A chemical company, which employed 4000 people.
44/ She told me her address which I wrote down on a piece of paper.
45/ The market, which I usually go to, has refresh vegetables.
46/ Last year we spent our holiday in Singapore which is in the Asia.
47/ He received a low mark for his essay which was only one page long.
48/ My laptop, which is a present from my parents, is very useful.