I. Fill in the blank with the right form of the word. (Điền vào chỗ trống dạng đúng của từ được gợi ý để hoàn thành câu.) 1. What is the of that tree? 2. Staying is very important to keep fit. 3. I have an with the doctor this morning. 4. I need to you before the check-up. 5. I don't know the of that river. 1. 2. 3. 4. (HIGH) (HEALTH) (APPOINT) (WEIGHT) (LONG) 5.