—What happened to you on your way back to the hotel last night ?—I lost my way in complete darkness and, ________ things worse , it began to pour .
It is ___ to observe traffic rules.
The climate of Asia can ___ be spoken of as a whole.
As each candle burned four hours, the six candles ___ twenty-four hours.
It began to rain, ___ was exactly what we wanted.
He had travelled only seven miles across the Channel ___ his engine failed and he was forced to land on the sea.