1.If you want to learn english we,it is not half important to know some rules ( ) it is to have more practice
A so B as Csince Dthat
2.The marriedcouple regularly discussed the life habits they find( ) in each other
A they were annoying Bannoying C annoyed
3.The question that pnzzled them is( )they can get rid of the air pollution
Ahow is it that B that how CHow it is that