Polar bears live mostly on __________ sea ice, which they use as __________ platform for hunting seals.
Don’t be angry with us. We ____ with you together, but we were busy with our final reports when you called in.
With the progress of the society, women all over the world have improved their social ______ and rights.
It wasn’t until near the end of the letter ______ she mentioned her own plan.
The lift in that tall building went wrong and got trapped ______ the floors. People in it had no way out and were in panic.
-- What a mess! You are always so lazy!-- I’m not to blame, mum. I am ______ you have made me.