The aircraft ______________________________ (descend) from cruising height of 38,000ft to around 6,000ft in eight minutes before air traffic control ____________________ (lose) contact just before 11am.
was descending had lost
descended lost
According to witnesses who ______________________ (see) the aircraft descend, there __________________ (be) no sign of smoke or in-flight explosion, and weather at the time _____________________ (be) good.
saw had been had been
saw was was
The black box flight recorder __________________ (find), and __________________ (reveal) more in time.
was found will reveal
has been found will reveal
