Water is composed _______ hydrogen and oxygen.
A、ofA
becomposedof：由…组成。句意：水是由氢与氧化合而成的。
Thetwogirlscompetedwitheachother______thehighestmark.
Theypreferto_______therestofthemorningwalkinginthegarden.
Itisimportantto________yourskinfromtheharmfulstrongsunlight.
IsitShakespeareTheatre_______youaregoingtowatchtheplayTheMerchantofVenice?
_______foryourlaziness，youcouldhavefinishedtheassignmentbynow.
