I. Hoàn tất các câu, dùng các từ trong khung. Healthy difficult hygiene harvest helpful strange carefully 1. Farmers are very busy during the ________. 2. You should wash regularly to ensure personal_________. 3. Swimming is good for your________. 4. My father always drives_______. 5.My father always helps her mother do the housework. She 's very _______to her mother. 6. When you arrive in a new country, everything seems_______. 7. The exam wasn't easy. It was very________.