— How many students are going to the Great Wall?— ____.
--- Do you mind if I record your lecture?--- ________. Go ahead.
My chest _______ when I make a deep breath, doctor.
--- How can I use i Phone 5s? --- Just refer to the _________.
What I need is book that contains ABC of oil painting.
---Have you read the book?---Yes. But that one is _____worth reading. I suggest you______ it if you have time.