I have only a little ( ) of computers.(know) Do you know the exaxt ( ) of the river?(long)

I have only a little ( ) of computers.(know) Do you know the exaxt ( ) of the river?(long)
I have only a little ( ) of computers.(know) Do you know the exaxt ( ) of the river?(long)
The information offfice is ( )in the city center.(locate) At last they found a suitable for a camp.(locate)填空