Every Earth Day , We are made _____ signs to warn people to protect the nature .
______ your father a policeman twenty years ago?
---____________? ---She was friendly but very strict.
---How many students ______ in your class? ---There were 40.
Miss Go was strict _______ her work and she is also strict ______ her students.
Tony is a very ______ boy, so his teachers and classmates all like him.