—Mum, it’s fine today. I want to skate on the lake. —Don’t you think the ice is too thin to _______ your weight?

When the clock __________ twelve o’clock, Cinderella suddenly remembered her godmother’s words and rushed away from the prince.

Warm­blooded animals live an active life even in freezing winter，which helps them to ________ their normal body temperature.

You have to speak slowly in order to ____.

The hero’s words ____ the Young Pioneers greatly.