The stamp on the letter is an art, from _______ we can get a lot of cultural knowledge.

下列各组句子中，表达得体的一项是（ ）

The little boy is dirty from head to foot because he______in the mud all morning

The old manthe child not to play in the river but they wouldn’t listen.

.—What do you think of the meal?—Although some dishes _____, it really is a nice meal