听力原文：W: Did you go swimming yesterday?
M: I planned to, but my mum asked me to visit my grandpA.
What did he do yesterday?
A.He went swimming.
B.He planted trees.
C.He went to visit his grandpA.

A.What
B.He
C.
B.He
D.
C.He

【参考答案】

C
解析：根据回答“我本打算去，可我母亲让我去探望我祖父了。”可知答案为C。