.If we humans beings continue to waste and destroy natural resources without using _____ energy, such as the energy from the sun, wind and water, our earth will be done for.

The teacher along with the students_______ discussing the Reading Skills that was newly published in America in the classroom now.

__________the boy___________!

made Bill so angry— _____. His girl friend promised to comeat 8:30, but she hasn’t come yet.

I want to employ a college student who is good at English and math and has lots of spare time to teach my son. __________, he or she must have a sense of responsibility.