有关高一英语定语从句的三道选择题
1.Theknife[]weusedtocutthebreadisverysharp
A.whichB.withthatC.withitD.withwhich
2.Youmaytakeanythinguseful[]
A.whichyouwantB.youwantthemC.whatyouwantD.youwant
3.Isoxygentheonlygas[]helpsfireburn?
A.itB.whichC./D.that