写好题号1.Great changes___in Nanjing High School since I came he

写好题号
1.Great changes___in Nanjing High School since I came here in 1980.
A have been taken place B took place C have taken place D were taken place
为什么选C不选A,我觉得这里应该用被动语态啊,changes被take place,但答案上是C
2.What___to the earth in the last mten years?
A was happened B has happened C happened D has been happened
为什么选B不选C,我觉得in the last ten years是过去式,怎么变成has happened
3.The___child was___to open the birthday present.
A.exciting;exciting B exciting;excited C excited;excited Dexcited;exciting
第一空毫无疑问选excited,第二空我觉得excited修饰open the birthday present,表示激动地,而答案是D,exciting是令人激动的,感觉不对劲啊