---Oh, you’ve got this English-Chinese dictionary. How do you find it? ----It is ______. I turn to it whenever I meet with new words.

I have to reschedule the appointment with you since there is a ______ in my arrangement. 

 Be sure to read the _______ carefully before you take the medicine so that it can function better.

--- Do you have anyone particular in ___for the job? ---In my opinion, Tom is the right person.

In human, there is a possibility of ____ such as fever and headaches if there is exposure to the virus.