— _______the door, please.—Come in please. The door _______.
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”.
--- Are you willing to live on Mars(火星) one day? It must be amazing!--- It sounds exciting, but it still worries me.