We were _______ cold in the tent (帐篷) last night. A: freeze B: freezing C: freezes D: freezed

--Today is very cold, isn't it? --Yes, the river is __________ over. A: freezed B: freeze C: frozen D: freezing

Mum took out some ______ meat from the refrigrator to prepare for the dinner. A: freezing B: freezed C: frozen D: freeze