Pick the best word (or words) to fit in the blank/s.'We would have let some fresh air into the room, but we ... ... discover how to open the window.'

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English as a Second Language - Negative Modal Auxiliary Verbs - Easy — practice the complete quiz, review flashcards, or try a random question.

The negative form is generally constructed by adding 'not'. The little word 'can't' is a negative modal auxiliary - its positive counterpart is 'can'.


Pick the best word (or words) to fit in the blank/s.<br />'We would have let some fresh air into the room, but we ... ... discover how to open the window.'