Thisbookisthelightestand______(thin)ofallthebooks.
boy_______(复数)
-- Thank you very much!
-- ________.
Look at the sign. The library is _____ (close) from 1:00 p.m to 2:00 p.m.
Your father and your mother are your p_____
( )Look! Some meat ____ in the box. Some apples _____ in the basket.