选哪个,请给出原因.A.which B.that C.when D.how
选哪个,请给出原因.A.where B.that C.when D.which
选哪个,请给出原因.A.while B.in which C.except that D.in that
选哪个,请给出原因.A.It B.What C.That D.Which
选哪个,请给出原因.A.while B.whether C.what D.which
选哪个,请给出原因.A.when taking B.when taken C.when to taken D.when
选哪个,请给出原因.A.involving,that B.involved,that C.invovled,where
选哪个,请给出原因.A.used B.has been used C.using D.is using
选哪个,请给出原因.A.to realize B.realized C.have realized D.realizin
选哪个,请给出原因.A.proving B.proved C.was proved D.has been proved
选哪个,请给出原因.A.to travel B.travelled C.travel D.travelling
选哪个,请给出原因.A.speak B.speaking C.spoken D.to speak
选哪个,请给出原因.A.Planting B.Planted C.To plant D.To be planted