The prisoner had little difficulty in ___ form the police.\
One-third of the country _____ covered with trees and the majority of the citizens _____ black people.
You look so young.Haven’t you graduated from your university?Yes, I _______ in the English Department of Zhejiang Normal University for four years.
All the scientific evidence ______ that increasing use of chemicals in farming______damaging our health.
It is required that the students _____ mobile phones in their school, so seldom _____them using one.
Nuclear ______ be really dangerous at times even though it’s a nice energy in general.