WHENEVER YOU FLY, YOU NEED TO ___ YOUR FLIGHT 24 HOURS IN ADVANCE.

11. - MUON NHO TU VUNG TIENG ANH CHAC CHAN CO DAP AN
MUON NHO TU VUNG TIENG ANH CHAC CHAN CO DAP AN

11.

Whenever you fly, you need to ___ your flight 24 hours in advance.