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单项选择题

If he had spent more time practising speaking English before, he _____ able to speak it much better now.
A、will be
B、would be
C、has been 
D、would have been

问答题

竞争辅导是教育学生（），鼓励学生在学习、生活中形成正当合理的竞争局面，避免因竞争而产生嫉妒、破坏等反社会行为。