------They are said to be quarrelling about our new language lab. ------ I don’t care. It has __________ to do with me.  

__ is not possible that Bob can win the first prize in the competition.

—Would you like tea or coffee? —_____________is ok. I’d like water.

Sarah hopes to become a friend of ________ shares her interests.

One of the most important questions they had to consider was _________ of public health.