The manager always put ____ of his workers before__________.

School children must be taught how to deal with dangerous ________ .

 We’d better not leave until the play ends, for the last _______ of the play is very important.

Will you please also state your earliest delivery date, your terms of payment, and discounts for regular _______?

It can’t be a（n） _______ that four jewelry stores were robbed in one night．