“It’s too early to conclude that the problem ____ but I think we have been moving in the right direction,” the manager said
| A．had been solved | B．had solved |
| C．has been solved | D．has solved |
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“It’s too early to conclude that the problem ____ but I think we have been moving in the right direction,” the manager said
| A．had been solved | B．had solved |
| C．has been solved | D．has solved |
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