Pardon? I _____ quite catch you.— I said I ______ the song before.

I couldn’t remember the exact date of the storm, but I knew it was ________ Sunday because we were on ________ field trip.

If you want to save money, take the escalator_____ the second floor and turn right.[ ]

─You look so tired, Celia! ─Yes. I volleyball the whole afternoon.

You see, “Food Safety” receives thousands of Internet hits a day.—Obviously, it has become one of the _________ topics recently.