whether

"After school, my family went to a restaurant for dinner. "

"Let me introduce you to my friends."

"The meeting is scheduled for Wednesday."

"If this store doesn't have the blue shirt I want, what are the alternatives? "

"Let me introduce you to my friends."

"In the phrase "parent and child," 'child' is a correlative of 'parent'. "

"The adverbial "happily" shows how the student reacted to the good grade. "

"Considering different colleges opened up many new possibilities for her future. "

"The menu offered a clear disjunctive: you could have soup or salad, but not both. "

"The interrogative "who" is often used in classroom discussions to encourage student participation. "

"The guard blew his whistle to indicate imminent departure."

"The school offered an alternative schedule for students who needed more time to study. "