1.As a leader,he never says no to ___ all his group members

1.As a leader,he never says no to ___ all his group members think is right.
a.that b.which c.as d.what
2.Bacteria ___ in the soil play a big role in recycling the carbon and other elements.
a.live b.living c.to live d.lived
3.Mr.and Mrs.Turner didn't seem to expect their son to be anything but ___ he was.
a.who b.whom c.what d.that
4.Peter's textbook is gone.Who __ habe taken it?
a.must b.would c.should d.could
5.___ science and technology help the society to progress is a fact accepted by the most people.,
a.Modern b.There is modern c.It is modern D.That modern
6.Your essay would be better if you placed paragraph three ___ paragraph one and paragraph two.
a before b after c between d in