---Who is the tallest boy?        ---It ______  be John. John is of medium height.

 —“Crash diets” make us lose weight fast and I am all into that. —But it_______better to work out.　   

--- Could I look at your pictures?   --- Yes, of course you _____.

---Mum, I hurt my leg when I climbed the tree. --- You ___ that tall tree. I’ve told you many times.

When I was a child, my father ______ read me a story at night before bedtime．