( )1. Christopher Columbus was ______ explorer from ______ European country.
A. a; an B. an; an C. a; a D. an; a
( )2. This is one of the most interesting books _______ I have _______ read.
A. that; never B. which; never C. that; ever D. which ; ever
( )3. I have three pen friends. One is _______, and the other two are_______.
A. Japanese; America B. Russian; Germen C. Canada; Australia D. English; French