Peter is ten years old. He is ______________ to go to school.
--- Morning, class! Good luck to all of you in the exam!--- Morning, teacher. ________.
There ______ a group of people _______on the beach.
— you your dictionary yet?—Yes, I , I it ten minutes ago.
_____of the warm water _____already been used up.
Stop cutting trees, _______ the earth will become worse and worse.