3 Complete the sentences with the superlative of the adjective.
a. Mount Elbrus, in Russia, is ... mountain in Europe. (high)
b. The Thames is ... river in England. (long)
c. Japan is ... country in the world. (expensive)
d. The Chihuahua is ... dog in the world. (small)
e. Football is ... sport in Great Britain. (popular)
f. The Atacama Desert is ... place in the world. (dry)