1 . 泰勒敏捷的动作帮助队友冷静下来。
Taylor’s swift action helped her teammates ________ ________.

2 . China is the only nuclear-weapon state that has unconditionally committed (承诺) itself not to use or ________ (威胁) to use nuclear weapons against non-nuclear-weapon states or nuclear-weapon-free zones. Can the US make such a commitment? （根据汉语提示单词拼写）

3 . —Would you like________ the environment?
—I don’t know. What can I do?

A．help save	B．helping save
C．to help saving	D．to help save