Look over there—there’s a very long, winding path _____ up to the house.

There are three eggs _______ by the hen_______ under the tree.

There is a new problem________in the popularity of private cars that road conditions need improving.

 After chatting on QQ a long time, Mary looked up, ________ that it was 11：00 pm, long past her usual bedtime.

I’ve always treasured the watch______ to me on my eighteenth birthday.