---Do you have trouble finishing the work? ---The work is not so difficult as you think.We have finished it already.
—What is the new bridge like? —Well,it is now________of the old one.
—I don't imagine Russ and his poor dog had a good time on the deserted island,________? —I have no idea.
She started laughing loudly when I began to sing,which made me feel very________.
My father likes playing golf;he's really enthusiastic________it.
This book is said to be a special one,which________many events that cannot be found in other history books.