A footballer was_______ taking money for deliberately not scoring goals.

At the meeting they discussed three different _____ to the study of maths.

In a new study of African elephants，researchers have    four distinct characters that are among a group.

In order to meet the deadline, Professor Smith along with his assistants       the project day and night.

—Mr. Smith, would you have some more ice-cream?—No, thanks. It’s very good, but I have to ______ my weight, you know.