填空题
A--Welcome aboard Delta Airlines.
B--On behalf of Delta Airlines Captain Johnson and his crew welcome you aboard.
C--Our flight to Japan will take approximately four hours.
D--Let us remind you to fasten your seat belts, straighten your seats, and kindly refrain from smoking during take - off.
E--Under your seat there is a life vest like this one for each of you.
F--An oxygen mask will come down from overhead in case of an emergency.
G--Please press the call button whenever you need any help.
H--We’ll take off soon. Please fasten your seat belt.