[ Grammar ]
Most of the cities in the future will … monorails.
A. having
B. had
C. has
D. have
Select your answer:

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Modal Verbs › ViewHis parents found out the boy … hear very well.
A. shouldn´t
B. couldn´t
C. might not
Grammar › View
She ___ ____ waiting for a long time.
A. has been
B. has is
C. have be
D. have is
