[ Gerund or Infinitive ]
Don’t forget … off the lights.
A. turning
B. to turn

Random Topics:
Past Perfect SimpleTenses and FoodSpellingModals and Modal PerfectsFirst Conditional & Future TensesModals of ProhibitionWh-QuestionUsed to & would & Past SimpleModals AuxiliarySimple Present and Past TensesOther quiz:
Grammar › ViewConcentration is ________ by alertness.
A. Help
B. Will help
C. Helps
D. Helped
Phrasal Verb › View
Get ___________ (To recover from a bad experience)
A. off
B. over
C. on
D. up
Grammar › ViewThere are _______ days of school before the end of the year than we thought we had.
A. less
B. fewer
Present Simple, Present Continuous or Present Perfect › View
She _____ (study) for her English grammar test yet.
A. hasn’t studied
B. does study
C. don’t study