His advice couldn’t help her health, so she couldn’t help .
A. improve , cry
B. improving, cry
C. improve, crying
D. improving, crying
网友回答
A. improve , cry
B. improving, cry
(答案→)C. improve, crying
D. improving, crying
解析：句意，他的建议无益于改善她的健康，所以她禁不住哭了。Help do sth. 有助于做某事；couldn’t help doing sth.禁不住做某事，根据题意，故选C。