wheel is thought to be first invention of transportation.A.The; the;不填B.The; a;
来源：网络
时间：
推荐文章
________wheel is thought to be ________ first invention of ________ transportation.
A.The; the;不填
B.The; a; the
C.A; the; a
D.A; a; 不填
试题答案
A
指代特定的东西； first前加定冠词。