[ Gerunds and Infinitives ]
I forget …………………. the door, but I’m sure I must’ve locked it.
A. locking
B. to lock

Random Topics:
Definite and Indefinite ArticlesToeic VerbPresent Perfect and Simple Past TenseIrregular Plural NounsPast or Present Verb TensePronouns, Verb, ConjunctionGrammar - QuantiflierRun-On SentencesTenses: Present simple, Past Simple, Future SimpleIdiom and TensesOther quiz:
Tenses › ViewI can see you are not listening to me. What _________ about?
A. do you think
B. are you thinking
C. have you thought
Adverb Clauses › View
He will go to the shop.
Can this be a full sentence in academic writing?
A. fragment
B. sentence
Phrasal Verb › ViewDon’t _____________! If you keep practising, you will be a great basketball player someday.
A. take up
B. show up
C. pick up
D. give up
Vocabulary & Grammar › View
. The integration of ____ technology into the new smartphone model has helped improve user experience.
A. advanced
B. real-time
C. effortless
D. self-driving
