By the time we reach that page, we ___________ twenty lessons of the book.
Jr.Parkinson stood up and left the room, ____ the door behind him.
Mary is really good at taking notes in class. She can almost every word her teacher says.
Most of the roads were covered with thick snow, ____ made our journey more difficult.
If Joe’s wife won’t go to the party,________.
People are living in ___ world where mouse clicks rule our life, so online searches have become _____ must.