May is the _________ month of a year.
Liu Qian has made “magic” a hot word, _________ he?
The world has a big headache and it _______ by money. It began in America last year.
The art club is for members only. You can’t go in _________ you are a member.
— _________ yogurt do you need?— Three cups.
This dictionary is pretty cheap. The price of it is _________ of the three.