– Can we get the computer before Wednesday?– _____. If it is 30 kilometers, we can make it, but if farther away, it will be on Thursday.
The problem ________ this material can be used in our factory has been solved.
The first thing ________ I did was to see if there were any products ________ might help me, but there only seemed to be powders ________ to kill snakes.
________ is very important in doing any scientific work.
All efforts of cloning an animal will be ________ if there is not enough diversity in the group to overcome illness.
It was the building of the rail network from the west to the east coast ________ brought even larger numbers to California in the 1860s.