__________ this is true in theory, it's very different in practice.

Mr. Brown arranged for the taxi to come at six __________ he would not have to wait long at the station.

Busy __________ she is, Rita sets aside two hours every Sunday afternoon to spend with her son.

—Did you remember to give Tom the book you borrowed from him?
—Yes, I gave it to him __________ I saw him.

It was five o'clock in the afternoon __________ they climbed up to the top of the mountain.