Passengers stand and stretch as the train __________ the railway station.
| A．pulls | B．pulls out of |
| C．pulls into | D．pulls to |
．Our teacher is very busy.He is ________ in working out a teaching plan.
| A．involve | B．involving |
| C．involved | D．to involve |
Beijing Man used fire for cooking food and also for light, warmth and ________
wild beasts.
| A．protected from | B．protection from |
| C．protecting from | D．to protect from |
The doctor strongly recommended that he ________ a holiday.
| A．would take | B．took |
| C．had taken | D．take |
Mr.Smith, there's a man at the front door who says he has news for you ________
vital importance.
| A．of | B．with | C．in | D．from |
My sister studied hard at school when she was young, which contributes ________ her success in her career.
| A．with | B．for | C．from | D．to |