45. If the wind doesn’t _____ before three o’clock, we will not be able to take off today.
He must be from America, ____ can be judged from his accent.
This is the hotel ______ we stayed last year.
Do you know when Mr. Brown _______? When he _______ , please let me know.
My uncle _____ to see me. He'll be here soon.
Look out! That tree _____ fall down.