Shewasvery usforinformingherofherson’ssafereturn....
问题详情：
She was very us for informing her of her son’s safe return.
A. grateful to B. grateful for C. grateful D. grateful with
【回答】
A 考查固定搭配。be grateful to sb. for sth.是固定搭配，意为“因某事而感激某人”，故*为A。
知识点：动词和动词短语
题型：选择题
