Question

My letter ________ my parents this morning was my study at school.

A. for; on
B. to; about
C. for; about
D. to; for

Answer 1

答案B
解析：表示“给某人的信”，letter后应跟介词to。about表示“涉及的内容”，据此，B为正确答案，其他三项均不符合要求。