吴凯和赵立两人是同班同学。吴凯语文学得好,赵立数学学得好,于是口头协议:相互学习,取长补短。经过一段时间后,两人的成绩都有了大幅度的提高。对此,下列认识你认为正确的是 ( )①只有做了我们该做的,才可能获得自己该得的②公平的合作,必然是互惠的合作③我们不能只享受利益而不付出,否则对其他人不公平④他们两人不应该合作,因为他们的成绩拉不开差距了
The famous cooks are from European countries. Some are, others are .
Millions of treeson March 12th last year.
This kind of MP5 is my favourite, but I can’t________ it.
Our teachers __________ the same clothes when they are at school.
I’m busy ________ my homework, and my mother is busy _______ dinner.