Our Geography teacher told us that a swallow ______(fiy)to northen countries in summer.
问题描述：
Our Geography teacher told us that a swallow ______(fiy)to northen countries in summer.
答
Our Geography teacher told us that a swallow ___would fly__(fly)to northen countries in summer.
我们的地理老师告诉我们，夏天燕子会飞向北方国家。
答案：would fly 或者 was flying
注：是在考学生主从句时态一致的选择题或者适当形式填空题。
答
Our Geography teacher told us that a swallow _flies_____(fiy)to northen countries in summer.
我们的地理老师告诉我们，夏天燕子会飞向北方国家。
答
flies