单项选择题
Codes are a way of writing something in secret; ________, anyone who doesn’t know the code will not be able to read it.
A．that is
B．worse still
C．in short
D．on the other hand
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单项选择题
You can’t be ________ careful in making the decision as it was such a critical case.
A．very
B．quite
C．too
D．so
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单项选择题
The prospect of increased prices has already ______ worries.
A．provoked
B．irritated
C．inspired
D．hoisted
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