Thetrafficwasheldupformorethanthirtyminutes,________causedmetoarrivelate.

The challenge is not one of expansion. _______, the rapid growth in enrollment over the last 40 years has come to an end.

_______ at all is worth doing well.

Sofarscientistshaveonlyacquired________understandingofthephysicalprocessesthatcauseearthquakes.

He declined _______ more about it.