单项选择题

At the later stage of development, there ______ new problems which first seemed insoluble.

A．rose
B．arose
C．resulted
D．happened
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单项选择题
Thomas asked that he ______ allowed to take the course this semester.
A．could be
B．was
C．be
D．would be
单项选择题
Do you mean that you would rather have the claim brought to court if ______
A．it need be
B．need be
C．it will be
D．there is in need
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