题文
A large quantity of information, as well as some timely help, ______ since the organization was built.
| A．has offered |
| B．had been offered |
| C．has been offered |
| D．is offered |
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A large quantity of information, as well as some timely help, ______ since the organization was built.
| A．has offered |
| B．had been offered |
| C．has been offered |
| D．is offered |
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