(用正確形式填空)He used to ______(take) a walk after supper．

(用正確形式填空)They are used to ______(quarrel) with each other．

(用正確形式填空)When the police arrived，the injured man ______(send) to the hospital．

(用正確形式填空)If you are too lazy，you ______(not pass) the exam．

(用正確形式填空)Jim said he ______(come) from USA．

(用正確形式填空)Look! There is a cat ______(climb) up the tree．

(補全單詞)　r______　pass through a system of treatment so that it is fit to use again

(補全單詞)s______ waste things；litter

(補全單詞)p ______ showing good manners to others

(補全單詞)e ______ the surroundings，circumstances，influences