---- Don't you think it necessary that he _______ to Miami but to New York?---- I agree, but the problem is ________ he has refused to.
______ you make a promise, you should keep it.
My parents insisted that I _____ medicine instead of law.
________ was it that made the singer ______ his Asia Tour Concerts.
He ______ his sister to give up the plan for cycling along the Mekong River, but failed.
_______, the examination tomorrow has been cancelled (取消).