[ -Ing and Infinitive Verb Patterns ]
I usually forget _____ the lights off.
A. turning
B. to turn

Random Topics:
Passive SentencesWho vs WhomVerbs - third personPresent Perfect or Past SimplePreposition and ConjunctionCommon & Proper NounsFunctional Sentence TypesModal Verb, Passive VoiceFirst Conditional, Future Time ClausesConditional TensesOther quiz:
Prepositions Of Place › ViewWhere are the trainers?
A. They’re under the chair.
B. They’re next to the bed.
C. They’re under the bed.
Prepositions › View
After I left university, I set _____ on a three-month trip to Asia.
A. out
B. up
C. on
D. with
Conjunction › ViewThey have a big collection of paintings ___ Picasso.
a. at
b. by
c. with
Present Tenses › View
The birds are flying in the air.
A. Present Perfect
B. Present Perfect Continuous
C. Present Continuous
D. Present Simple