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Articles Exercise 24

Multiple Choice Exercise

Choose A, AN, THE or (/) for "no article" for each blank below, then click the "Check" button to check your answers.
Sometimes, names can be confusing in different languages. Much to confusion of many English learners, Europa is not the name of continent, but rather moon which orbits Jupiter. And although many people have never heard of it, it is especially important moon. Scientists have discovered that surface is entirely covered with ice, but researchers hope that beneath frozen layer lies ocean. Nobody knows if center of the moon is frozen solid or if it is liquid water.

If some vast, undiscovered ocean does exist, it would be cold and harsh environment; however, some scientists believe that life might exist there just like it does at bottom of Earth's oceans. Some say that only way to find out is to send probe to drill down into ice and see what's there. Such mission would be expensive project indeed.
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