想問以下答案及原因 ?
1. People in Africa face a lot of problems. Many people are hungry but there isn't _______food
2. Many people are sick but there are ____ doctors.
3. Now let's look at the animals. I'm ____ in the small insects because they are really ________
4. I'm ____ to see the birds here because they usually stay in the tree which people can't see.
*** Thanks a lot **