I can’t remember how many years ago _____ a fight broke out between the husband and the wife.
Can you guess _________the iPhone4s yesterday?—- Sorry, I’ve no idea about it.
Do you make these flowers _____?—Oh, no, in fact, they are made by machine. [ ]
______ are the Olympic Games held?—Every three years. [ ]
I need an apple and two eggs ________breakfast.[ ]