根据下列各句句意和空白之后的汉语提示词，在答题卡指定区域的横线上写出对应单词的正确形式，每空只写一词。

小题1:The newly-married couple have ________(登广告) for a new department.

小题2:Her dream has become a _________(现实).

小题3:Anna and two other ________(志愿者) are helping in a local school.

小题4:The Christmas tree is __________(装饰)with lights and beautiful objects.

小题5:___________(就个人而言 )I think waiting here is a waste of time .

小题6:This afternoon he suddenly fell ill and an ________(救护车) was called to carry him to hospital.

小题7:Though we were tired, it was a _________(有价值的) experience.

小题8:We are always told that a good job _________（值得）a good reward.

小题9:This new product is sold ________(世界各地).                                                             

小题10:Stick stamps on the ________(信封) and post the letters. 

用自然沉降法测定空气中细菌总数，将营养琼脂平板置于采样点处，打开平皿应暴露（）

A.2分钟

B.4分钟

C.5分钟

D.8分钟

E.10分钟