John introduced _________.
_________ have been good friends since childhood.
Tom! Can you see your pen and book on the floor? __________.
What time is it? ______five o'clock.
She writes _______ from time to time.
He told me only part of the story and that was ______.
Your teacher is sick today. ________ is why I have come here to give the lesson.
What I want to tell you is __________: The meeting is put off till next Tuesday.
Those people have worked for a long time. They are ______ tired and hungry, but ______ of them would stop to take a break.
A: Does she study French or German? B: She studies ______ of them.