题文
Many children are ____ in the countryside when their parents flood into the cities for jobs．
| A．left behind |
| B．left off |
| C．left aside |
| D．left out |
推荐试卷
Many children are ____ in the countryside when their parents flood into the cities for jobs．
| A．left behind |
| B．left off |
| C．left aside |
| D．left out |
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