题目内容
单词直通车！根据句意和首字母提示补全单词。
Li Ming is a soldier. He has s________ in the Army for three years.
There are a lot of d________ between English and Chinese.
You should be p________ to that old man.
Did your pen pal r________ your gift?
Who is k________ on the door? It's too loud.
