How I wish we could study _________ there are fewer exams！

Without the contributions of Qian Xuesen, the father of Chinese missile, the achievements in space technology unthinkable in China．

Tommy, do you know if Frank_______ to the theatre with us this Sunday if it_______ -Sorry, I have no idea.

achieve a lot when we learn to let our differences unite , rather than _______ us.

Look!The people in the park are enjoying very much.