单项选择题

______ several times, they need some encouragement.

A．Being failed
B．Having failed
C．To fail
D．To be failed
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单项选择题
______ we have finished the Course, we shall start doing more revision work.
A．For now
B．Since that
C．Now that
D．By now
单项选择题
In Scotland, as in the rest of the United Kingdom, ______ schooling begins at age 5 and ends at age 16.
A．compelling
B．forced
C．obliged
D．compulsory
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