1.Research findings show wo spend about two hours dreaming every night,no matter what we __D__ during the day.

1.Research findings show wo spend about two hours dreaming every night,no matter what we __D__ during the day.
A.should have done B.would have done
C.must have done D.may have done
2.A bicycle __A__ by electric power,which does good to the environment,becomes quite popular in our city.
A.driven B.being driven C.to be driven D.is driven