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-- Why didn’t you go to Mike’s birthday party yesterday?
-- Well, I _____, but I forgot it.

–Carla _______ go to that historical museum after school when she was a teenager.
--No wonder she is so familiar with it.

--- The research on the new flu virus vaccine is challenging and demanding. Who do you think can do the job?     
--- ____ my students have a try?

The boss has given everyone a special holiday, so we ________ go to work tomorrow.  

Most of the big hotels in Shanghai were full last week, but finally we______find a room in a small one.

—Catherine,  I have cleaned the room for you.
—Thanks. You_______ it.  I could manage it myself.

--Do you think Jack will lend us a hand?
--He is the last one to help others. He _____lend his hand, though.

"Those responsible for the accident      be punished while those contributing to solving the problems be rewarded," promised the official then and there.

—I expected him to be nervous before his speech, but he was as cool as a cucumber.
—He _______ it carefully.

No driving after drinking is a rule that every driver _______ obey in our country.