Quiz: fill in the blank:

I ___ an apple already.

eaten, am eating, was eating, had eaten, eat, were eating, ate, will eat, have eaten, will be eating

• Where does a river intersects another river, a city usually is formed.
• A massive rural exodus has been taken place throughout the world during the course of the twentieth century.
• Medical doctors should continuously to read medical literature so they keep abreast of medical developments.
• To generate income, magazine publishers must decide whether to increase the subscription price or selling advertising.
• How many dinosaurs initially survived the asteroid impact with the Earth, which ultimately cause the extinction of the species, is still open to question.
• If it receives enough rain at the proper time, hay will grow quickly, as grass.
• Heavy oxygen, termed deuterium, composes of atoms which are ten percent heavier than those of oxygen.
• Of all the cereals, rice is the one that providing food for more people than any of the other grain crops.
• Who pays for wedding expenses depends on the culture in what the wedding takes place.
• The purpose of the United Nations, broad speaking, is to maintain peace and security and to encourage respect for human rights.
• With special enzymes that are call restriction enzymes, it is possible to split off segments of DNA from the donor organism.
• A number of sleeping pills are accompanied by such side effects as amnesia and irritable.
• Anthropologists assert that many of the early Native Americans who lived on the Plains did not engage in planting crops but hunt, living primarily on buffalo meat.
• Reptiles must always to avoid extremes of temperature if they are to maintain appropriate body heat.
• Agricultural scientists at the University of California have recently made a number of discoveries that could help themselves receive upcoming governmental grants.
• Many international corporations have exploited the natural resources of countries in third world.
• It's essential that the temperature is not elevated to a point where the substance formed may become unstable and decompose into its constituent elements.
• The differential attractions of the sun and the moon have a direct effect in the rising and falling of the tides.
• I need some rest, I will go to home.
• Anders Celsius, a Swedish astronomer, devised the temperature scale what bears his name.