1£®She was dressed casually (casual) in jeans and a sweatshirt.

2£®The employee couldn't put up with the pressure, so he chose to leave the company.

3£®He took a cold water bath to_refresh (refresh)himself and then went back to work again.

4£®No one knows when such a custom came into existence(exist)£®

5£®Our students should study hard and make contributions to our society.

6£®We advocate helping(help)the poor schoolmates by raising some money.

7£®Under these circumstances(circumstance)£¬you might agree with us that it is rather difficult for your products to set foot in this market.

8£®The rain didn't make much difference(different)to the game.