题文
I think every student should go to school________，but some of them are always late．
| A．by the time |
| B．on time |
| C．for a time |
| D．at times |
I think every student should go to school________，but some of them are always late．
| A．by the time |
| B．on time |
| C．for a time |
| D．at times |
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