1. 根据首字母提示补全单词

①—Which plane hasn't been found yet ?

— Oh, the f number is MH370.

②You don't need to go home . Let's go (直接地) to school. 

③How many (飞行员) are there in a plane ?

④Work hard, and you will (成功) in the end.

⑤His answer is e right.