根据句意及汉语提示完成下列句子.

1. _____ (欢迎) to China.

2. There is an _____ (机场) near my house.

3. This is the _____ (开始) of the garden tour.

4. _____ (如果) you' re _____ (饥饿), you can buy some cakes in the supermarket.

5. You don't walk _____ (穿过) the forest alone.