Fill in the form as follows: name of drink milk soda water orange juice mineral water number (person) 20141814 (1) The number of people who like to drink milk is the largest in our class.

(2)20- 14=6 (person),

There are six more people who like to drink milk than those who like to drink soda.

(3) 20+14+18+14 = 66 (person),

There are 66 students in Class One.

According to the survey results, we should buy more milk for the next party in this class.

So the answer is: milk, 6, 66, milk.