When I went to say goodbye to Anna, she the piano.
—What’s the matter? —They said I should not be allowed _________ here . They don’t allow_________ in the waiting room.
Internet is used _________ information for people , but still lots of people are used _________ information from books.
His brother’s life _________ a lot in these few years. A changedB. changes C. has changed D. had changed
—What’s paper made _________ ? —Wood.
— Do you need my help, Mary ? —_________.