Question

He was a stranger in this town, so the local people didn’t know _______.

1. A.
   how could they make friends with him
2. B.
   how they could make friends with him
3. C.
   how can they make friends with him
4. D.
   how they can make friends with him

Answer 1

B
解析：
此题重点考查宾语从句的时态和语序问题，无论哪种句式结构充当宾语从句都要用陈述句语序，从句的时态要和主句的时态保持一致。因主句的谓语动词是过去式从句的谓语动词也要用相应的过去时态。