Read the passage about UFO Sightings. Choose the best options (A, B, C, or D). UFO sightings are still the subject of discussion these days. Some are explainable, while many others remain a mystery. The most common type of UFO sighting is (26) _______ light in the sky. These lights come in different colors and shapes, (27) _______ people often see them moving in strange patterns. Other sightings include objects that look like aircraft or spacecraft that seem to go against physics rules. Most UFO ...

Read the passage about UFO Sightings. Choose the best options (A, B, C, or D).

UFO sightings are still the subject of discussion these days. Some are explainable, while many others remain a mystery. The most common type of UFO sighting is (26) _______ light in the sky. These lights come in different colors and shapes, (27) _______ people often see them moving in strange patterns. Other sightings include objects that look like aircraft or spacecraft that seem to go against physics rules. Most UFO sightings remain unexplained. (28) _______, the explanations for some of the sightings include meteors, weather balloons and airplanes.

In some cases, the sightings are fake stories or incorrect identifications of common objects. It is difficult to know the exact number of UFO Sightings because many go unreported. However, some organizations collect and analyze reports (29) _______ around the world. These organizations often investigate the accuracy of the sightings carefully. UFO sightings remain a mystery. While there are possible explanations for some sightings, many (30) _______ unexplained. Some of these sightings could result from purely natural occurrences, while others may be evidence of alien visits.