In doing mouth-to-mouth breathing, you have to （）.

A. Ifs impossible.
B. I suggest we go to the seaside.
C. I’d like to tell you something.
D. How about going to the art exhibition
E. I hope not.
F. We’d better think of something else.
G. I’m afraid.
H. I’m very sorry to hear that.

A．It is used by people to encourage those who are confronted with danger.
B．It is used to show that one is enthusiastic and hospitable.
C．It is used to create a more friendly atmosphere and to avoid embarrassment.
D．It is used by people to protect others in the threatening situation.