Researchers are now conducting hibernation experiments and can use chemicals to put living cells into sleep-like state they don’t age.

Who________your parents talking________—They are talking to my brother．

What hot weather!一Yes. But it’s unusual experience for us. We once lived in a cold place.

Our English teacher has the English language in this text to make it easier for us to understand.

Why you didn’t buy the gold ring?— I _____, but I didn’t have the money.[ ]