Everyone must __________ the security check (安检) before getting on the plane at the airport.— Yes. It’s necessary to ensure the passengers’ safety.

money, the man was very rich, but hewas not happy at all

Thank you for giving me so much information. —______________________.

Why ! Where’s my passport Maybe I left iton the plane–My Goodness ! You ____________ thingsbehind

My father worked day and night. Otherwise, there ________ no one to support the family.