가주어 1. It is uncertain when she will come. 2. It is relaxing to listen to music at the end of the day. 3. It is difficult to speak a foreign language fluently. 4. It was unfortunate that he lost his bag. 5. It is surprising that so many people enjoy hiking. 6. It is unbelievable that she passed the exam. 7. It is nice that they are getting married. 8. It is tiring to do housework. There + be동사 +..