一、单项选择（共10分）
1. Learning country’s language is a better way of knowing ________ culture behind it.
A. the; a B. a; the C. 不填; the D. a; 不填
2. ---Excuse me, I want to buy some food. Where can I find a supermarket？
---I know ________ not far from here. You can easily find ________.
A. that; it B. it; one C. one; it D. one; one
3. I heard Lucy ________ happily in her room when I passed her house.
A. sing B. to sing C. singing D. sings
