You’d better ______ your flight reservation at thelatest 3 days in advance

Reportedly yesterday a group of American soldiers were walking along the street in Iraq whena bomb was ____ , three of whom were killed.[ ]

Can the plane fly _____ the Atlantic Ocean—Yes,but it needs to go_____the clouds for hours.

Many students’ failures________their carelessness in every examination.[ ]

In order to in a short time, the actress ate a large amount of food much fat and protein(蛋白质).