He made another wonderful discovery, ____ of great importance to science.
The mother looks upset outside the operating room, whose son _________ on.
_____ the days went on, my memories seemed to get worse.
I would appreciate________, to be honest, if goods could be sent as soon as possible.
The farmers suffered a heavy _______because of the terrible storm .
I can’t tell you the exact time when I will get there. _______, I’ll be there as early as I can.