______ people are standing outside the office. _____ people there is at least over 1,000.
______ students should be given more free time is suggested by many experts and welcomed by kids in school.
Only when he returned______ the truth.
Some insects ______ the color of their surroundings to protect themselves.
It was such a_____ job that I really felt_____.
The difficulty which we had _______ with the local people has now been removed.