Definition: 30 minutes past one o'clock/two o'clock/three o'clock, etc. Level: A1
我们七点半回到了酒店。
We got back to our hotel at ___half ___past seven.
我九点半开始上课。
I start college at ___half ___past nine.
会议十点半开始。
The meeting starts at ___half ___past ten.