根据句意及所给中英文或首字母提示，写出句中所缺单词。 1. The patients are very_______(感激的) to the doctors and the nurses.. 2. — What colour do you like best?  — Red. It is the colour of _______(热) and srong feelings. 3. President Hu Jintao has met with many ________(领导人) from all over the world during the Beijing Olympic Games. 4. I have got a toothache, so I have to see a d________. 5. Tom is in a bad m_______and he didn't talk to anybody all day. 6. I can't _______(have enough money to buy or to do something) to go to school this term. 7. Colour can make us feel _______(in need of sleep).