填空题

S4. Varying your exercise program can make your exercise _______.

【参考答案】

exciting/enjoyable
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填空题
S2. Many people mistakenly believe when you get old you will inevitably _______.
单项选择题
It's believed that the success of any brand is determined by the ______ of marketing.
A．expenditure
B．knowledge
C．reputation
D．practice
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