The number of the volunteers in our city____2，000．And sixty percent of them ____teachers and students．（ ）
A．is；isB．is；areC．are；isD．are；are
The number of the volunteers in our city____2，000．And sixty percent of them ____teachers and students．（ ）
A．is；isB．is；areC．are；isD．are；are
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