I got ______ bad toothache yesterday, which kept me awake ______ whole night.
Every possible means _______ to prevent the crash , but the computer doesn’t still work.
Have you made up your mind ________ abroad? I advise you to consider it carefully.
________ get a complete picture, more information is needed.
The USA is a large country in ________ many different dialects are spoken.
Look at this! It’s broken now! You ________ have been careful!