practise、workout、exercise、三者有什么不同?具体如何使用?用中文说明一下区别。什么情况下用哪个词。

practise---n.&v.训练 you'd better practise your english everyday.workout----n.测验 there will be a english workout this afternoon.exercise---n.&v.练习,锻炼 let us complete exercise 1./you had better d...