题文
Large quantities of cotton___shipped all over the world already.A large quantity of bamboo___used for pipes to carry water
| A．has been;are |
| B．has been;is |
| C．have been;is |
| D．have been;are |
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Large quantities of cotton___shipped all over the world already.A large quantity of bamboo___used for pipes to carry water
| A．has been;are |
| B．has been;is |
| C．have been;is |
| D．have been;are |
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