单词填空。 1. Fresh fruit and vegetables c_______ plentiful Vitamin C. 2. Very few people s________ in losing weight and keeping it off. 3. It wouldn't do you any h________ to get some experience first. 4. He showed no m_______ to his enemies. 5. Your mistake resulted in heavy l_______. 6. Dave didn't r_______ to any of her emails, which made her angry. 7. It is a rule that our baggage should be i_______ by customs officers (海关人员). 8. I am busy, so I have to e_______ a housekeeper to look after my children.