The soil that had been converted to ____ flowers was on its way ______ .
It will be a long time __________ we finally solve the problem of pollution.
It was five o'clock in the afternoon __________ they climbed up to the top of the mountain.
—Did you remember to give Tom the book you borrowed from him? —Yes, I gave it to him __________ I saw him.
Busy __________ she is, Rita sets aside two hours every Sunday afternoon to spend with her son.
Mr. Brown arranged for the taxi to come at six __________ he would not have to wait long at the station.