FOR EMPHASIS, WITH 'DID'

我确实打了客服电话，但被搁置了半个小时。

I ___did ___call the customer service hotline, but I was put on hold for half an hour.

经理确实知道安全隐患，但没有采取任何行动。

The manager ___did ___know about the safety hazard, yet no action was taken.

新系统确实运行了一阵子，但最终还是又出故障了。

The new system ___did ___work for a while, but it eventually broke down again.

尽管有暴风雪，快递确实准时送到了。

The delivery ___did ___arrive on time, despite the snowstorm.

他确实说过会提交报告，但从来没兑现。

He ___did ___say he would submit the report, but he never followed through.