From the ________ look on his face, I knew that he must have been threatened by someone.

---How do you like the film? ---There was nothing special, it was only ____. 

_______news came ________an unknown disease was spreading in the area .

 The girl looked at me with a ____expression. Maybe the problem was quite ______.

 ___ with various research projects, that scientist can’t even find time to visit his parents.