He is ill. I don’t know _______ he will come to school.
Thomas Edison is known _____inventions______ a great inventor.
After John graduated ,he went on to study in ______ university instead of going to work.
---Millie was invited to the party .How lucky! ---Well, she not come. She is not sure whether her mother will allow her to.
silk feels soft and cool, it is difficult to take good care of.
----My teacher often encourages me more friends. ----Your teacher’s idea is right .The more friends you make, you will be.