. She was so angry and spoke so fast that none of us understood ____ she said meant.
Our bodies are strengthened by taking exercise. ______, our minds are developed by learning.
American Indians ______ about five percent of the U.S. population.
The problem of global warming is serious. ______, the sea levels have risen a little.
At the beginning of class, the noise of desks ______ could be heard outside the classroom.
Yesterday morning he got up earlier than ______, for it was not a(n) ______ day.