345.( )我国人口最多的少数民族是

434.( )The () of an airplane is the pilot in charge of it.

433.( )Jack jumped into the sea and ()the life raft.

432.( )The fire is threatening about sixty homes，and residents have ()the areA.

431( )They escaped through an () exit and called the policE.

430.( )I feel ()after such a hardworking week.

429.( )There will be some air () in 10 minutes. Please retum to your seat and fasten the seat belt.

428.( )The actors () the kids with their enthusiasm.

427.( )He doesn＇t want to () in political affairs.

426.( )Because of this，the economy is () to get worsE.

425.( )The pilot was seriously injured and the () would take over.