下列对句中加横线词的解释不正确的一项是 （ ）

ong you’ve done to her is terrible, ____ you should make an apology to her, I think.

In communication, a smile is usually ________ strong sign of a friendly and ________ open attitude.

The number 6,743,234,123 is read ___ _ .

Take good care of yourself, son!–Don’t worry, mom! I will call you as soon as I ________ America.