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 |
______the fact that his first experiment had failed，Prof. White stuck to his research.
| A．Because of | B．As to |
| C．In view of | D．In spite of |
Robert wishes that he ________ business instead of history when he was in university.
| A．studies | B．studied |
| C．has studied | D．had studied |
If he _________ me tomorrow, I would let you know.
| A．should call | B．should have called |
| C．has called | D．call |
The project _______ helping young unemployed people.
| A．aims at | B．is aimed at |
| C．aims to | D．for the purpose of |
— Tony wouldn’t lend us a hand when we were in trouble.
— Well, it is ________ of him to be so unkind.
| A．normal | B．ordinary |
| C．common | D．typical |