Every country has its own culture. Even though each country uses doors，doors may have diff

Every country has its own culture. Even though each country uses doors，doors may have   different functions and purposes 【小题1】     lead to cultural differences.
When I first came to America，I noticed that
a public building had two different doors and 【小题2】     had distinct functions. You have to push the door with the word “PUSH” to go out of the building and to pull the door【小题3】     the word “PULL” to enter  the building. This was new to me, 【小题4】     we use the same door in South Korea. For quite a few times I failed 【小题5】     (go )out of a shopping centre and was embarrassed. The way of using school bus doors was also strange to me. I used to take 【小题6】     school bus to classes.
The school decided that when the driver opened both the front and back doors，students who 【小题7】    off the bus should get off first，and students who were getting on should get on later.
In South Korea, we do not need to wait for people to get 【小题8】    . One morning, I hurried to the bus, and when the bus doors opened, I 【小题9】    (conscious) tried to get on the school bus through the front door. All the students around looked at me, I was totally embarrassed, and 【小题10】     face went red. which