单项选择题

Which is ______ of all the subjects

A．difficult
B．the most difficult
C．more difficult
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单项选择题
They're ______ to build a big factory here.
A．making
B．thinking
C．planning
单项选择题
The trousers (裤子) ______ too short for me. Please show me some others.
A．is
B．are
C．were
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