单项选择题

Only when he has lost his way ______ that he wasn' t careful enough to make sure that he really did understand.

A．he realize
B．he can realize
C．he has realized
D．does he realize
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单项选择题
The plan indicated that this objective was ______ in the following way.
A．attaining
B．to be attained
C．to attain
D．attained
单项选择题
So far as English ______ , the truth of If A then B simply points out the fact that in England everybody speaks English.
A．concerns
B．concerned
C．is concerning
D．is concerned
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