The Great Wall is famous,so every year________people come to visit it.A.millionB.million ofC.millions of
Simon doesn't know what _______ today.
There are three _______doctors and five ______nurses in the room.
-- ______ do you exercise? --Three times a week.
Millie needs _______healthy.
There is ________ “m” and ________ “u” in the word “much”.