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"You must do your homework before you can watch television."

"John and I have been friends ever since we were roommates at college.   Trust is important between friends.   I used to find it hard to make friends when I was shy."

"Astronomers use telescopes to study planets and stars. "

"He had something of his mother in him."

"Except for one or two days a year, he usually walks to work."

"The teacher assigned students to different positions in the classroom. "

"The plural of "cat" is "cats." "

"to direct the affairs of a nation or the movements of an army"

"My sister's birthday is next week, and we're planning a party. "

"The address on the envelope was 123 Main Street. "

""Mr. Smith always uses the abbreviation 'etc.' instead of writing out 'et cetera'." "

"We measured the temperature with a thermometer.   You should measure the angle with a spirit level."