Serious……

Can you complete this expression?

Are you serious…….moving to Australia? Or are you joking?

a) by

b) on

c) of

d) about

The answer is below!↓

sydney-australia

 

Answer: d) about

serious about

 

(Photo credit: https://www.publicdomainpictures.net/en/view-image.php?image=72127&picture=sydney-australia)