the team finished most of their research work?—Yes, but the rest rather difficult.

We often go to park ______ Sunday afternoon.[ ]

Do you know Mozart? — Of course. He wrote _____ of beautiful pieces of music.

I’m hungry. Could I have some bread?—I’m afraid there’s _______ left, and ________ of us has any spare time to get some.

This _____ my brother. ______ is my friend.