alone

"He is an unusual individual."

"Responsibility is a heavy burden."

"Consider that we’ve had three major events and the year has hardly begun."

"Her performance in the school play was matchless; no one else could have acted so convincingly. "

"It requires great strength to lift heavy objects."

"The restaurant serves coffee exclusively. "

"I have to focus on my work."

"In a small number of horses, muscle weakness may progress to paralysis."

""Many students have problems understanding fractions." "

"The children packed their lunches separately, each with their own snacks and drinks. "

"The editor agreed to keep a lid on a potentially disastrous political scoop in exchange for an exclusive of a happier nature."

"The solitary student preferred to study in the quiet library. "