__ to look after luggage for someone else, inform the police at once.

illing in Antarctica dragged on slowly becauseof lack of money, equipment breakdowns, environmental ______ and severe cold.

What happened to Tom—He ______ his leg while playing football with hisclassmates.

Paying attention to his diet, he felt the pain in his stomachgradually . [ ]

esegraduate’s record-setting $8,888,888_________ to his school at Yale Universityhas stirred wide debate at home