---Is Peter there? ---     , please. I'll see if I can find him for you. 

Do you _________ or serve in an organization or are you a member of some group?

Mr. Huang will ________ in the movement.

 Some Southeast Asian countries were quick to ________ the search for a missing Malaysian airliner--Malaysia Airlines Flight 370.

 It is important to have your eyes examined regularly to check for any sign of eye disease that may not have any ________.