People in many countries were sad at the news ______ Samaranch, Lifetime Honorary President of the Olympic Committee, died at 89 on April 21st.

When we were young, every evening my brother and I ______ stay at home waiting for our mother to come back from work.

It’s too cold. Would you mind closing thewindow– ______ . But please don’t do it now.

Polar bears liveon sea ice，which they use as a platform for hunting seals

Women have big advantages _____ men in space because they need less food and oxygen and they stand up to radiation better.[ ]