一组英语题

1,as,father ,carefully,his,Mike,dia,as(.){连词组句}
Mike did as carefully as his father
2，wants,charnpion,to,who,the,be(?)
Who wants to be the champion ?
3,Mary,all,subjects,best,math,studies,of,the(.)
Of all the studies maths is Mary's best
4,run,with,to,had,up,I,them,to,catch(.)
I had to run up to catch up with them
5,dangerous,fierce,a,it,feed,to,such,was,animal(.)
It was dnagerous to feed such a fierce animal.

Mike dias as carefully as his father.

Who the champion whats to be?

Mary studies math best of all the subjects.

I had run to catch up with them.

It was dangerous to feed such a fierce animal.

dia 这是什么 是DID吗