I think your suggestions are of great ________ to me and they are well worth ________.

A．valuable; to offer

B．valuable; giving

C．value; taking

D．value; to follow

广泛性焦虑症又称慢性焦虑症。偶尔也可出现（）发作。常（）或（）起病。患者主要表现出与（）的持续的痛苦焦虑体验。