题目内容
It was 80 years before Christopher Columbus crossed the Atlantic ______Zheng sailed to East Africa .
[ ]
A. when
B. that
C. after
D. since
B. that
C. after
D. since
B
练习册系列答案
相关题目
It was 80 years before Christopher Columbus crossed the Atlantic______ Zheng sailed to East Africa
| A.when | B.that | C.after | D.since |