我的火车在六点四十发车，所以我得早点出发。

My train departs at ___six-forty, so I need to leave early.

我每天乘坐6点40分的火车去上班。

I take the ___six-forty train to work every morning.

这位跳水运动员在最后一跳获得了6.4分。

The diver received a ___six-four for his final dive.