----- I can ’t see the words on the blackboard clearly.----- Why, your eyes need _____ perhaps you need _______ glasses.
Allen had to call a taxi because the box was______ to carry all the way home.
The research results show that the earth goes a little faster ______it is closer to the sun.
— What can I do for you? — I’d like to borrow ______ book about ______ Pacific Ocean.
It is the _______in the country to go out and pick flowers on the first day of spring.
---Poor Steve! I could hardly recognize him just now! ---__________. He has changed so much!