Don’t forget to wash your hands _________ you have meals. 

— I hear the famous singer Xu Song may come to Weifang next month.— Really? _______ he comes, my younger sister will be very excited.

_____ I was in the USA, I made a lot of friends there.

This story is too difficult for us. _____ read something easier.

_________many children like KFC, I think they’d better try not to eat it too often.