[ -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:
Grammar › ViewThe child was ______ while he was walking on the zebra crossing.
A. hit by a lorry
B. by hit a lorry
C. a lorry hit by
D. by a hit lorry
Grammar › View
helen __________to play piano for four years.
A. learned
B. is learning
C. have been learning
D. has been learning
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