题文
In order to let their children receive a better education, parents often have to ______ and for quite a long time.
| A．observe |
| B．struggle |
| C．expand |
| D．circulate |
推荐试卷
In order to let their children receive a better education, parents often have to ______ and for quite a long time.
| A．observe |
| B．struggle |
| C．expand |
| D．circulate |
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