p175
12>Those wishing to participate in the course are required to pay for books and ________ in advance.
답이 enroll인데 are 이란 동사가 있는데 어떻게 enroll 이 나오나요? 그리고 여기서 books 는 명사로 쓰인건가요?
20번> Georgetown Dental Center is well known for being _________ to the needs of its clients.
답이 attentive 입니다. 여기 왜 형용사가 들어가야 하나요?
23번 > The restaurant _____Mr. Sung is supposed to meet his potential investor is closed for maintenance.
where이 답인데 동사가 두개 나왔는데 where은 관계부사로 쓰여 사용할수 없지 않나요?
27>번 Mr. Alderidger's secretary said that this was the cabinet in ____ she had left the research files last week.
여기 동사가 said, was, had 3개가 나오는게 맞나요?
부탁드립니다.




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Those wishing to participate in the course are required to pay for books
Those wishing to participate in the course are required to enroll in advance.
그리고 books는 명사 맞음
20> 밑줄 앞에 있는 being이 be 동사의 동명사라서 형용사를 데려올 수 있어요.
23> 관계부사도 관계절이어서 동사를 가지고 있어야함.
The restaurant (where Mr. sung is supposed to meet his potential investor) is closed for maintenance.
괄호 친 부분이 관계부사절
24> 네. 세개는 맞는데 said, was, had left에요.
문장이 세개여서 동사도 세개
1. Mr Alderidger's secretary said that
2. this was the cabinet
3. she had left the research files last week
여기서 3번 문장도 관계부사절이고 in which가 관계부사 where과 같은 뜻으로 사용됨
had left는 leave의 과거 완료형이에요
덕분에 잘 알고 갑니다.
설명 감사드립니다.