(10) 잘 듣고 빈칸에 맞는 단어를 쓰세요.
W: John, you’re finally up. Go brush your teeth while I get your breakfast ready.
M: I brushed my teeth before I went to sleep last night.
W: I know. But for healthy teeth, you should brush your teeth right after you wake up.
M: Can I do it later, Mom?
W: No. While you’re sleeping, lots of
____ are forming in your mouth.
M: Really? That must be why my mouth smells bad when I get up.
W: Plus, when bacteria in your mouth
____ with food, they can cause damage to your teeth.
M: I didn’t
____ that the time when you brush is also very important.
W: So even though it’s
____, brushing your teeth as soon as you get up is good for your teeth.
M: Okay. I’ll go and do it.