He _______ 3 cups of coffee so far.

“That’s a valid concern, but everything is on schedule for now. Let’s cross that bridge when we come to it.” What does "let's cross that bridge when we come to it" mean?

Past tense of the word "talk".

Past tense of the word "sleep".

A: 这是谁？zhè shì shuí ? B: 这是我妈妈。zhè shì wǒ māma。 A: 那个呢？nàge ne ? B: 那不是我家人，是我____。 nà búshì wǒ jiārén, shì wǒ____。