다음 글의 밑줄 친 부분 중, 어법상 틀린 것을 고르세요.

The way we communicate with others ① depends on our cultural background. People from different cultures have different styles of expression, ② which can sometimes lead to misunderstandings. For example, in some cultures, silence is seen as a sign of respect, while in others, it may be interpreted as a lack of interest. In a recent survey, students who ③ were asked about their communication preferences showed various responses. One student remarked that he ④ gave a difficult task but didn't know how ⑤ to solve it because of the language barrier.

다음 글의 밑줄 친 부분 중, 어법상 틀린 것을 고르세요.

One of the most effective ways to improve your English ① is reading books aloud. This practice helps you become more familiar with the rhythm of the language. In a classroom experiment, students ② which practiced this method for a month showed significant progress. They ③ were given various texts to read, and they were asked ④ to finish each one within a set time. This method proved to be successful, ⑤ encouraging students to speak more confidently.

다음 글의 밑줄 친 부분 중, 어법상 틀린 것을 고르세요.

The Great Wall of China ① is known as one of the most impressive architectural feats in history. It ② was built over many centuries by various dynasties. During its construction, thousands of workers ③ involved in the difficult task of moving heavy stones. The wall was originally intended ④ to protect the country from invasions. Today, it is ⑤ visited by millions of tourists from all over the world every year.