二. 单项填空（共15小题；每小题1分，共15分）
从下列每小题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项。
31. At the foot of the hill you could hear nothing but the_______ of the running water.
A. shout B. noise C. voice D. sound
32. Your digital watch is quite nice. Where did you buy_____？I want to buy_____，too.
A. one；one B. it；it C. it；one D. one；it
33. Heilongjiang is in the _______ of China.
A. northeast B. northeastern C. northwest D. northwestern
