Jack can’tconcentrate on his lessons recently.— Yes, that might____why he did so badly in thelast test.[ ]

I got upset yesterday just because you didn’t hand in your homework on time.— Terribly sorry. Ten more minutes, I ______ it to you. [ ]

Do you know sound travels very fast —Yes. But light travels sound.

My sister has many strict rules in her school. — ______________.

Tom hasn’t finished what he was saying. —He.I already know what he has in mind.