Alan wanted to be a pilot when he 1. __was__ young. He always 2. _daydreamed _in the class. ' If I 3. _ became_ a pilot, I 4._ would fly__ a plane and 5.__take _ people to other countries." he thought.
Four years later, Alan 6__joined_the training course of an airline company. He 7.__ has flown _ a plane for two years. He_8. flies to Japan once a week.
我想要以上中文解釋,同埋點解用這些時態..???