It is quite impossible that it will rain tomorrow. But if it __________, I would still go to school by bike.
Advertisers are increasingly cautious about taking out ads _______ children, and that is hurting children’s magazines.
Until the start of the Industrial Revolution, mankind was poor, hungry, and constantly at the _______ of disease and natural disasters.
Student loan is supposed to provide financial support for people who would _______ not be able to go to college.
A new survey released by Yale University finds that Americans trust scientists most when ______ comes to information on climate change.
The massive earthquake and tsunamis has killed 350 people in a coastal town in Chile so far, _______ the total death number reported last Sunday.