Did you see the CCTV news on TV last night?—Yes, ______ children had a good festival on Children’s Day.

We often eat potatoes____ picnic.[ ]

The weather is getting warmer. I hope the children won’t go onto the ice.–I warned them_____.

Students need at least eight hours to sleep, or they are_______ in class.

______ girl in red is ______ friend of Mary’s．