The milk must be preserved at this temperature until it ____

be surprised if you can get Calvin, who is verybusy, ______these tickets for you

You must be very excited about going to England for further study.— , but I am afraid I won’t do well because my English is poor.

下列四个选项中对加点实词的解释全都正确的一项是（ ）

(2013·甘肃兰州名校高三检测)Give me an undisturbed hour and I ________ the work Tom has left unfinished