—This pair of shoes __________ really small for me —Why not try another _________..

 Playing football and watching TV _____ both interesting. 

No one except Jack and Tom  _____the answer.

Professor Smith, along with his assistant, ________on the project day and night to meet the deadline.

---- A number of voiunteers _____ willing to teach in China’s rural areas.----- Yes. The number _____ getting bigger and bigger.