No student ______ go out of the school campus after 10:00 at night without permission according to the school regulations.
| A．shall | B．must | C．would | D．should |
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 |
It was only when I reread his poems recently______ I began to appreciate their beauty.
| A．until | B．that | C．then | D．so |
Last term our maths teacher set so difficult an examination problem ______none of us worked out.
| A．that | B．as | C．so that | D．which |