It ____ be realized that football…………

It ___ be realized that football, in its modern form, was ____organized and given rules in Britain.
A. has to ,initially B.should, firstly
C.must，first D. ought to, initial

See who is there! ____ it be may? It ____(be)3 years since ____(become)a middle schoolstudent if it ____(be)sunny tomorrow,I ____(walk)to school. Once one sets a goal, he should be ____ to it until he eventally accomplishes it. If it ____(be) nice today,we ____(go)for a picnic.But we were unlucky today. 32 ____ one's work properly may be worse than not doing it at all If this magazine isn't yours,____ can it be? I parked my car right under the big tree, but now it's gone. Where ____ it be? It's cold today, but it will be ____ later on. 这里填warmer还是colder. Got To Be Real