1. Jumping out of ________ airplane at ten thousand feet is quite ________ exciting experience.
A./; the¡¡¡¡ B./; an¡¡ C.an; an¡¡¡¡ D.the; the
2. There’s ________ dictionary on ________ desk by your side.
A.a; the B.a; a C.the; a D.the; the
3. An accident happened at ________ crossroads a few meters away from ________ bank.
A.a; a B./; a C./; the D.the; /
4.The warmth of _____ sweater will of course be determined by the sort of _____ wool used.
A.the; the B.the; / C./; the D./; /