Câu hỏi:

Choose the correct word A, B or C for each gap to complete the following passage.

Question 4

Read the passage below and choose one correct answer for each question.

Most of UFOs are identified as one of the following things except _________.

Choose the correct word A, B or C for each gap to complete the following passage.

Question 3

Read the passage below and choose one correct answer for each question.

How many percents of all reported UFO sightings are not identified?

Read the passage below and choose one correct answer for each question.

Another word used to describe a UFO is _________.

Choose the correct word A, B or C for each gap to complete the following passage.

Question 5

Choose the correct word A, B or C for each gap to complete the following passage.

Question 2