They were all very tired, but ________ of them would stop to take a rest.

It was ___he said___ disappointed me. 

The Parkers bought a new house, but         will need a lot of work before they can move in. 

The threats to the health of astronauts in space are very different from ______ on earth. 

 I don’t like to travel to big cities, because to me, one city is much like ________.