Since the forest has been destroyed by a big fire, a large ______ of trees ______ to be planted on the mountain．
| A．number; has | B．amount; has |
| C．quantity; have | D．sum; have |
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Since the forest has been destroyed by a big fire, a large ______ of trees ______ to be planted on the mountain．
| A．number; has | B．amount; has |
| C．quantity; have | D．sum; have |
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