How much has their company     this year? 

Believe it or not. My grandpa , 95 years old now, ________World WarⅡ.

______ the kids have left home , we’ve got a lot of extra space.

In our class, girl students _____ nearly 60% of the students, and most of them study very well.

If the boy had _____ the dog alone it wouldn't have bitten him.