. hard Bill is working!-Yes. He’s the most hard-working in our class.*

We can see more police than usual at the crossings ________ snowy days.

They speak perfect English. How long have theylearnt it?— ______ they were seven years old.A．Since

an to open to the outside world in the ate1970s. , there have beengreat changes in the country.

Are these socks yours— No Mine ______ outside on the clothesline