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Complete the passive-aggressive note left in the staff kitchen. Select ALL the phrases that correctly complete the warning.
"____________ again, please refrain from trying to fix it with a paperclip and sticky tape."
The correct answers are Should the new espresso machine break, If the new espresso machine breaks, and If the new espresso machine should break.
This is a first conditional sentence. We can use the present simple (If the new espresso machine breaks) or add "should" to make the condition seem slightly less likely (If the new espresso machine should break).
We can also invert the sentence by dropping "if" and moving "should" to the front (Should the new espresso machine break).
"Should the new espresso machine breaks" is incorrect because "should" is a modal verb, so it must be followed by the base form of the verb (break), without an "s".