The two girls competed with each other ______ the highest mark.
A、forA
competefor:比賽…奪取competeagainst/with:和…競賽句意：這兩個女孩互相競爭，以取得最高分。
Wateriscomposed_______hydrogenandoxygen.
IsitShakespeareTheatre_______youaregoingtowatchtheplayTheMerchantofVenice?
Iftheoperation________carefullyprepared,itwouldnothavebeensuccessful.
支持代孕的理由有
Itisimportantto________yourskinfromtheharmfulstrongsunlight.
