are the Olympic Games held? —Every four years. [ ]

Do you know the man was talking to our English teacher? —Yes. It’s Mr Baker, our maths teacher.

A new factory will be set up ___ a year. [ ]

Have you finished your work yet? —No，I’ll finish it in _______ ten minutes.

Here is __________ iPad my uncle sent me yesterday. I believe it’s __________ fantastic one!