The American Civil War lasted four years the North won in the end．
A．after B．when C．before D．since
----Have you any letters _______, sir?
---No, thanks．You may take a rest．
A．to type B．to be typed C．to be typing D．typed
There sat an old man in a black coat, his head in his hands thinking．
A．put B．with C．and D．for
Don’t be too rude to your father．Never in his life _____ in that way．
A．has he spoken to B．he has spoken to
C．has he been spoken to D．he has been spoken
She may have missed the train,____ she won’t arrive for another hour．
A．in that case B．in her case C．an any case D．in which case
_____ in the dark, his head hit against a tree．
A．Walking B．He was walking C．Walked D．When he was walking
