enigma

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

"My friend told me there was something in the box, but I didn't know what it was yet. "

"After the party, only a few close friends remained to help clean up. "

"Do you need a gift for that special someone?"

"The disappearance of the homework assignment from the table was a mystery. "

"The sudden, inexplicable silence in the classroom before the test made everyone nervous. "

"He received a mysterious phone call this morning."

"The leaky faucet in the kitchen is a problem that needs fixing. "

"Everyone in the class needs to bring their textbook to the first lecture. "

"The departure was scheduled for noon."

"The sudden disappearance of my keys is really puzzling me. "

"The complicated instructions on the new software difficult me from completing the project on time. "