题文
After the boy disappeared, the anxious relatives and friends spent months trying to __________ what had happened.
| A．look out | B．figure out |
| C．give out | D．rule out |
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After the boy disappeared, the anxious relatives and friends spent months trying to __________ what had happened.
| A．look out | B．figure out |
| C．give out | D．rule out |
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