______ the teacher has given permission, ______allowed to use the equipment in the lab.

填入下面一段文字横线处的语句，最恰当的一句是（ ）表达，与传播的内容同样重要。同样是形容工作忙累，有人会说“头一抬，天就黑了”，有人则会说“想念床”；同样是指出缺点，有人会说“每个人都是被上帝咬过一口的苹果”，也有人会说“梅须逊雪三分白，雪却输梅一段香”。____________ 。

Life for us is _________exercise in making differentchoices and can never come to_________end until the end of life itself.

I can’t thank you _______ much because without your help I _______ have won the first prize.

Eliza remembers everything exactly as if it_________ yesterday.