I knew （ ） John Lennon, but not （ ） famous one.
（A）/; a
（B）a; the
（C）/; the
（D）the; a
There is （ ） house in the picture. There is （ ） old woman near （ ） house.
（A）an; a; the
（B）a; an; the
（C）the; a; an
（D）a; the; an
While he was investigating ways to improve the telescope Newton made （ ） discovery which completely changed （ ） man's understanding of color.
（A）a; /
（B）a; the
（C）/; the
（D）the; a
