A．Nancy should call the neighbors to complain.
B．Nancy should introduce her children to the neighbors.
C．Nancy should ask the neighbor’’ s son to babyish.
D．Nancy should bring the neighbors a gift.

A．Japanese students study much harder than Columbian students.
B．Columbian students score higher than Japanese students in maths.
C．Columbian students are more optimistic about their maths skills.
D．Japanese students have better conditions for study.