What ______ the number of students in your school—About two thousand. A number of them _____ from the countryside.

from the moon, our earth, with water sevenpercent of its surface, appears as a “blue ball”.

By 2025, when the number of consumers worldwide has reached 4.2 billion, people with high income will be, for the first time, more than_______ struggling to meet basic needs.

My mother gets up _____, but my father gets up even ______.

Just search the internet, you can get almost all the _____ you need.