— you or your sister fond of music? — Neither she nor I .
While working in the countryside , the students ________ a great deal of knowledge on plant life.
By the time she ________ tomorrow, the work ________.
Some people waste a lot of food ________ others haven’t enough to eat.
. School children must be taught how to deal with dangerous ________.
The survey shows that ______ of the population in the country ______ adults.