Only those who have the patience to do simple things perfectly ever _________ the skill to do difficult things easily.
The split between humans and living apes is thought by some scholars ____ 15 to 20 million years ago.
— Linda hasn’t shown up yet. — It’s strange. She ____.
David applied for the position three times ____ he finally got it.
Many questions have been answered by John. He must have previewed the lessons last night, ____ he?
Look, ____ fashionable clothes is she wearing that all the eyes are fixed on her!