1.__That__ he finished writing the composition in such a short time surprised us all.
2.With the number of cars increasing rapidly in cities, a major problem is __where__ the cars can be parked.
3.__What__ made her angry was that her daughter had stolen some money.
4.Most of the people are not aware of the fact __that__ the haze is hard to remove.
5.My husband is very lazy and that's __where/why__ I dislike him.