I regret ______ you that my daughter has already regretted ______ out with you. So leave her alone

and don't bother her any more. [ ]

A. telling; dating  

B. to tell; to date    

C. to tell; dating  

D. telling; to date

从高处跳水，入水时应保持（），两腿伸直加紧，双手不能松开，直至重新浮于水面才可放松。

A.头在下，脚在上

B.脚在下，头在上

C.胸在下，背在上

D.背在下，胸在上