根据汉语意思，完成下列句子,每空填一词。（10分）

小题1:If you are tired, you’d better________ ________ (躺下) and take a rest.

小题2:What are you going to be when you________ ________ (长大)？

小题3:Don’t spit________ ________ (当众).

小题4:We will play basketball________ ________ (代替) playing soccer.

小题5:The doctor always ________ ________（给……做检查）his patients carefully.

小题6:你不得在教室乱扔垃圾。

You must not             litter           in the classroom .

小题7:由于脚伤刘翔不得不放弃比赛。

Liu Xiang had to ________  _________ the race because his foot was hurt.

小题8:昨晚孩子们直到做完他们的家庭作业才去睡觉。

Children ________ go to bed ________ they finished their homework last night.

小题9:熬夜太晚对身体健康有害。

___________  __________ late is bad for health.

小题10:我们该做什么来与SARS 作斗争呢?

What            we do         fight SARS ?

岩浆岩中的流面可用来确定（）但不能确定（）。