1 . For 30 minutes, I sang softly to the small creature until finally delivering (递送) him ________ those who could help. (用适当的词填空)

3 . Styrofoam is plastic ________ a bad reputation. (用适当的词填空)

4 . The Chinese calculator’s name is “suanpan”, but it is known ________ “abacus” in English. (用适当的词填空)

5 . He’s doing better than I am. He fixed our air-conditioning ________ free. (用适当的词填空)

6 . It is popular________women and men. (用适当的词填空)

7 . The society was set up to preserve endangered species___________ extinction. (用适当的词填空)

8 . If a person places money prior ______anything else, it’s very likely that he could not enjoy the happiness in life. (用适当的词填空)

9 . I had an alarming encounter ______ a wild pig. (用适当的词填空)

10 . The young man’s voice was just an ordinary voice,but he sang ______tune. (用适当的词填空)