—Did you listen to the report last Friday?
—Yes, it was about the shortage of immigrant workers. That was the first time I ________ about the subject.
| A．have heard | B．was hearing |
| C．would hear | D．had heard |
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—Did you listen to the report last Friday?
—Yes, it was about the shortage of immigrant workers. That was the first time I ________ about the subject.
| A．have heard | B．was hearing |
| C．would hear | D．had heard |
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