During his first trip to China, President Obama discussed some key global issues such as economic recovery, climate change, _______ nuclear weapons in his talks with Chinese President Hu Jintao.

A. and stopping to spread                                  B. to stop spreading

C. to stop to spread                                       D. and stopping the spread of

During his first trip to China, President Obama discussed some key global issues such as economic recovery, climate change, _______ nuclear weapons in his talks with Chinese President Hu Jintao.

1. A.
   and stopping to spread
2. B.
   to stop spreading
3. C.
   to stop to spread
4. D.
   and stopping the spread of

During his first trip to China, President Obama discussed some key global issues such as economic recovery, climate change, _______ nuclear weapons in his talks with Chinese President Hu Jintao.

A. and stopping to spread                            B. to stop spreading

C. to stop to spread                                 D. and stopping the spread of

 During his first trip to China, President Obama discussed some key global issues such as economic recovery, climate change, _______ nuclear weapons in his talks with Chinese President Hu Jintao.

A. and stopping to spread                            B. to stop spreading

C. to stop to spread                                 D. and stopping the spread of

During his first trip to China, President Obama discussed some key global issues such as economic recovery, climate change, _______ nuclear weapons in his talks with Chinese President Hu Jintao.