来自刘庆杰的问题
Idon'tknowwhoinwented_______cellphone,butIthinkit's_______mostusefulinvention.A.the;theB.the;aC.a;theD.a;a为什么选择B?
Idon'tknowwhoinwented_______cellphone,butIthinkit's_______mostusefulinvention.
A.the;the
B.the;a
C.a;the
D.a;a
为什么选择B?
