Mary is a ______customer of that shop; That’s why sometimes she is given a small discount(折扣)

The schoolboy,still in bed,said to himself,It’s cold outside,and my bed is __________ and warm.

Mistakes don’t just happen, but they occur for a reason. What we ought to do is find out the reason and then making the mistakes _____________.

 It’s ______ to sign up for the cooking contest when you can’t cook a meal by yourself.

In business negotiation, an _______ attitude may result in breaking the relationship with our partner while a too frank communication may bring a company into an unfavorable situation.