During the dialogue with Chinese youth in Shanghai, President Obama announced the U.S. would expand the number of students to study in China to 100,000 _______ ties between the two countries.

   A. strengthening    B. strengthened                    C. to strengthen                     D. to be strengthened

During the dialogue with Chinese youth in Shanghai, President Obama announced the U.S. would expand the number of students to study in China to 100,000 _______ ties between the two countries

1. A.
   strengthening
2. B.
   strengthened
3. C.
   to strengthen
4. D.
   to be strengthened

 During the dialogue with Chinese youth in Shanghai, President Obama announced the U.S. would expand the number of students to study in China to 100,000 _______ ties between the two countries.

   A. strengthening    B. strengthened                 C. to strengthen                 D. to be strengthened

During the dialogue with Chinese youth in Shanghai, President Obama announced the U.S. would expand the number of students to study in China to 100,000 _______ ties between the two countries.