The shop is _______ on Saturday and Sunday. We can go shopping there on weekdays.—Oh, no. It since last Saturday.

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

I’ll never forget the lesson ______ last year.

You should ____________ your hands if you want to ask teachers for help.

Can you tell me _______to talk to and ________to get help when we have problems?