1 when in face of danger ,caml down and you will find a way out .为什么填caml不填camling,这句话的主语是..when后边引导的是.in face of danger

1 when in face of danger ,caml down and you will find a way out .为什么填caml不填camling,这句话的主语是..when后边引导的是.in face of danger作什么成分的
2 There goes the bell and out he rushed 的句子解析,还有可不可以把out 放到rushed的后面
3 The order came ______the soldiers_____the small village the next morning
Athat;had to leave Bthat; should leave C/;must leave Dwhen;should leave
4--------is hard is to do good all one's life and never do anything bad
A He B It C That D What
5 what is einstein's most famous theory?
A We call the Theory of Relativity
B That we call the Theory of Relativity
C What we call the Theory of Relativity
D We call it the Theory of Relativity