Don't be too____about things you are not supposed to know.

Don't be too____about things you are not supposed to know.
A.curious B.amusing C.strange D.considerate
2._____several times,the young scientist still kept on making his experimennts.
A.Having been failed B.Having failed C.Though failed DBecause of failure
3.________this design for the building,because it looks modern with traditional sense.
A.What is the advantage B.If I have a choice I'd choose
C.It's a great pity that D.It's better to