Here are the explanations for each question in English:

Question 5:
“It can be as important as understanding __________ words.”

Explanation: This sentence compares the importance of non-verbal communication to understanding words. In this context, "like" is the most appropriate word to express equivalence.

Correct answer: A. like


Question 6:
“Misunderstandings—often humorous __________ sometimes serious—can arise…”

Explanation: This sentence contrasts humorous misunderstandings with serious ones. The word "but" fits here to show the contrast between the two.

Correct answer: B. but


Question 7:
“For example, taking the difference in meaning of a gesture __________ is very common in the United States…”

Explanation: In this sentence, we need a word to connect the difference in meaning of a gesture to the example being given. "That" is the correct word to use here.

Correct answer: D. that


Question 8:
“To an American, it means that everything __________ OK.”

Explanation: In this sentence, "is" fits best as it connects the meaning of the gesture to the state of "OK."

Correct answer: A. is


Question 9:
“To a Japanese person, it means that you are talking __________ money.”

Explanation: The phrase “talking about money” makes "about" the most appropriate word to use here.

Correct answer: D. about


Question 10:
“In Greece, it is an offensive gesture.”

Explanation: This sentence talks about the gesture in Greece, and "in front of" doesn’t fit the context of describing something culturally offensive. "Offensive" is a clearer way to phrase this meaning.

Correct answer: D. after

5. A. as 6. B. but 7. D. that 8. A. is 9. B. about