they were think how they could get out. 这一句哪里有错

题目

they were think how they could get out. 这一句哪里有错

答案

这句话主句谓语动词 were think 错 了.当句子谓语动词是“行为动词”时,过去时态,要用该行为动词的过去式做谓语动词,而不能用 Be 动词.所以,正确改法：
They thought how they could get out.