The reason ____ he was late for school was _____he had to send his mother to a hospital.
| A．that; why | B．why; because | C．why; that | D．that; because |
. __________ in Hangzhou station for two hours, the old man eventually caught the last train to go back to his home in Huangyan.
| A．Waiting | B．To wait | C．Having waited | D．To have waited |
31. It’s not reasonable to regard all football fans as trouble makers — it’s only a few of them who are to blame for the violence.
| A．potential | B．various | C．illegal | D．adequate |
. Life is like a long race __________ we compete with others to go beyond ourselves.
| A．why | B．where | C．that | D．what |
Water may __________, while time never stops.
| A．keep up | B．make up | C．turn up | D．dry up |
. Jack is always occupied __________ his work, which makes him have no time to stay with his family.
| A．by | B．for | C．with | D．to |