Your natural hair color begins to fade________you grow older,and in time you grow grey.[ ]

The success of her book has given her high social .

She looked very kind and ______ a lot when I met her yesterday.

Before the 2008 Olympic Games took place, the young the old took an active part in learning English in Beijing.

They discussed the issue of the world’sclimate in Durban, South Africa several times but could come to no ________.