Sometimes customers can’t help _____ the things they don’t really need.[ ]

Tom was a black slave and he at last ______ the cotton farm to join the North Army.

sing renewable energy is a simpleidea, but ______ we find it hard to put into practice.

The manager of the company asked ________.

Have you decided to take up teaching as a career after graduation—I ________ go abroad for further education instead, but it depends.