unwanted

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

"The storm shelter protected the family from the heavy rain. "

"What do you want to eat?  I want you to leave.  I never wanted to go back to live with my mother."

"Living things need water to survive."

"Nobody in my class knew the answer to the tricky math problem. "

"The river overflowed the levee."

"The new student was considered an undesirable in the class because of his disruptive behavior. "

"This flow chart represents the assignment of tasks in our committee."

"By now, you must surely know which is which."

"The students were mostly quiet during the presentation. "

"The group unwelcomed the new student by ignoring her questions and excluding her from their activities. "

"A cat is an animal, not a plant. Humans are also animals, under the scientific definition, as we are not plants."