单项选择题

It was only after some progress ______ in the use and development of electric current that men began to realize the importance and possibilities of magnetism.

A．was made
B．would have been made
C．has been made
D．had been made
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单项选择题
You ______ that letter to James. However, you didn't.
A．ought to write
B．ought to have written
C．should write
D．should be writing
单项选择题
His honesty is ______; nobody can doubt it.
A．in question
B．out of the question
C．beside the question
D．without question
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