David was responsible and hardworking, _____ he was promoted from a clerk to a manager.
| A．which | B．as | C．for what | D．for which |
The Voice of America began during the World War Ⅱ, when Germany was broadcasting a radio program to get international ______.
| A．business | B．culture | C．support | D．information |
The officers narrowly escaped ___________in the hot battle.
| A．have killed | B．to kill | C．to be killed | D．being killed |
The children do not know how to _______ themselves decently at the party.
| A．act | B．perform | C．behave | D．advance |
The teacher said there were twelve _____ who had failed in the exam.
| A．at all | B．in all | C．all in | D．all in all |
The wounded soldier died ______I had a chance to know his name and family .So I can never give regards to any of his family or relatives.
| A．after | B．while | C．until | D．before |