单项选择题
A.As long as B.As well C.As if D.As for
A.It is because of the air pressure. B.It is because of the food in her stomach. C.It is because of the chewing-gum. D.It is because of her panic.
A.The woman insists that he do so. B.He doesn’t know what to do about her pain. C.Only Dr. Williams can prescribe a stronger medicine. D.He is unwilling to take the responsibility.