Young business people sitting at desk, using computer at business training, smiling. Young business people sitting at desk, using computer at busines Sizes: 150 × 150 / 300 × 207 / 768 × 530 / 1,024 × 707 / 250 × 250 / 600 × 400 / 300 × 200 / 400 × 200 / 130 × 90 / 725 × 500 / 1,600 × 1,104