Many ___ are playing an active part in making Kunming a civilized city （文明城市）．（ ）
| A． |
man |
B． |
woman |
C． |
volunteer |
D． |
volunteers |
Many ___ are playing an active part in making Kunming a civilized city （文明城市）．（ ）
| A． |
man |
B． |
woman |
C． |
volunteer |
D． |
volunteers |
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