It was thanks to your timely help that we accomplished the task on time.这句话的that从句由什么引出?

问题描述:

It was thanks to your timely help that we accomplished the task on time.
这句话的that从句由什么引出?

这是一个强调句,it + be + that 句型.多亏你的及时帮助,我们准时完成任务.