Today my father is feeling_______ to go to work.

Billy: I’ve been fixing the computer for over three hours, but it still doesn’t work. Nana: Why don’t you take a rest and try 　　　?  Maybe you’ll do better then.

There are too many students asking teachers to help in the teachers’ office, but this room is ____ small ____ hold them.

-- Is air the lightest thing in the world?-- Not            . Scientists from Zhejiang University have just developed the world’s lightest material.

—My mom was mad at me last night. What should I do?—Please say sorry to her________.