Collecting stamps as a hobby___________ increasingly popular during the past fifty years.
Mr. Baker including some tourists ______ the Great Wall before, so they headed for the Forbidden City.
One reason why he succeeds is ______he is good at thinking in different ways.
_______ beyond words, the businessman agreed to donate some money to help the sick.
You _____ the exam, but you were too careless.
-Are you free tomorrow evening?-Sorry, I’m afraid I ______a friend off then.