Sam is going to ride a horse. — 英语选择题
题目
Amy is telling her friend about Sam's plan for tomorrow. Sam 明天打算去骑马。哪个句子说对了 Sam 的计划?
A. Sam is going to ride a horse.
B. Sam are going to ride a horse.
C. Sam is going to ride a bike.
D. Sam am going to ride a horse.