—One of the main(原因) is that it is educational
menu rich, stand, act, touch, die. necessary, decide, pretty, outgoing
find out, feel like, quite a few, bring out, come out, of course, at least, make up, care about, dress up
comfortable, comfortably
hope, wish
maybe, may be
care, careful, carefully
hard, hardly
health healthy
both, all, none
someone, everyone, anyone
Can you see someflying over our house?
Look at yourself in the. Your face is dirty.
What would you like to drink, milk or 
My father readsafter dinner every day.
Bob and Mary, remember to takewith you. Now it's raining outside.
The teacher's funny story made lots of students