来自刘兰的问题
关于定语从句.Theirgoodsareexchangedforsuchmachineryandequipment_____weneedtobuyabroad.A.thatB.whatC.asD.which问下原因.
关于定语从句.
Theirgoodsareexchangedforsuchmachineryandequipment_____weneedtobuyabroad.
A.thatB.whatC.asD.which
问下原因.

