I （ ）more shocked when i heard about you engagement
A could have been b,might have been c .couldn't have been d.might not have been
2.Land is ( ) valuable today .people use every bit of it and don't want travellers on their land
a ,.such b those c no d .that
3.The internet is a fun place .but also a place ( ) concern
a.as b to c for d in .
q请说一下原因