[ 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:
Past Tenses › ViewLast weekend, Mark _______ around the park for over an hour. He felt very tired after that.
A. was
B. run
C. ran
D. saw
Grammar › View
The people wanted to ___ peace.
a. do
b. make
There 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