短文填词there are many things happening in our family

短文填词there are many things happening in our family
这篇短文填词这空We hung a sign on the front door that ____(写着),"We're having dinner.Come back latter." 答案为read
昨天看到一个单选 类似的
When I got back home I saw a message pinned to the door ____
“Sorry to miss you; will call later.” (NMET99 25)
A.read B.reads C.to read D.reading
这边又选D请说明理由.