单选题 She has a good ___ of English, so she can communicate with foreign passengers easily.

单选题 The captain announced that the flight would be ___ due to bad weather.

单选题 Please put your luggage in the ___ above your seat.

单选题 The flight attendant asked the passenger to ___ his seat belt before takeoff.

单选题 There are ___ flights from Haikou to Beijing every day.

单选题 I'm looking forward to ___ the beautiful scenery from the plane.

单选题 The plane took off ___ and landed safely at the destination.

单选题 Hainan Airlines provides high-quality ___ to passengers.