... WHOSE OF WHICH WHOSE : dùng cho người vật This is the book Its cover is nice -> This is the book whose cover is nice -> This is the book the cover of which is nice WHOSE :đứng trứoc danh từ OF ... The roads were crowded with refugees Many of them were wounded - 32/ The lorry crashed into a bus-load of schoolchildren Six of them were slightly injured - ... bread Most of it was mouldy - 34 I saw several houses Most of them were quite unsuitable - 35 He introduced me to his students Most of them were...