this matter is still in the dark. vs this matter is still very unclear 1.this matter is still in the dark. vs 2.this matter is still very unclear Are these sentences correct?

Is "this matter is still in the dark" correct? 1.this matter is still in the dark. vs 2.this matter is still very unclear Is the first one correct?Any other answers?

nothing was taken vs there was nothing taken vs there was nothing being taken nothing was taken vs there was nothing taken vs there was nothing being taken Which one is correct?

That is VS There is This is just the four of us. vs There is just the four of us. A photo shows a family of four, so which one is correct, or both are correct?

get over sth. VS put sth.behind Can we just get over it? vs Can we just put that behind us? Are these two sentences interchangeable?

on/under/into Back in the1960s, plastic was well ___ its way to becoming a staple of American life. what should we fill in the blank and why? on/under/into Examples are appreciated

what is it with what is it with you and this baby vs what's with you and this baby vs what's with you on this baby i know the first setence is correct. How about the second and third?