________ rapid economic developmentand political stability over the past three decades, but with them ________some social problems

l be a big help if you go to the store and getwhat we need for dinner ___________, I will set the table

In peace，too，the Red Cross is expected to send help ________ there is human suffering.　　　　　　　　　　　　　　　　　

Your sister isn’t at home. Can you help her_______ her baby

This isn’t ______ eraser. ______ is in the pencil box.