）—Are your __________ workers (工人)?
—No, .
| A．friend; they aren’t |
| B．sister; they are |
| C．grandparents; they aren’t |
| D．parents; they are |
）—Are your __________ workers (工人)?
—No, .
| A．friend; they aren’t |
| B．sister; they are |
| C．grandparents; they aren’t |
| D．parents; they are |
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