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 |