Almost all the students were having classes when the earthquake _________.
-- Why didn't you go camping with us? -- But I ______ all about it!
-- When do you need to pay the balance? -- ______ December 31.
. I think ______ information of this kind is help when you look for a job.
________ your composition carefully, some spelling mistakes can be avoided.
She is in a poor ___________ of health, which worries her mother much.