[ Grammar ]
According to current research, excessive smartphone usage ___________________ associated with poorer sleep quality and has affected many people.
A. has become
B. will become
C. becomes
D. became

Random Topics:
Conjunctions & PrepositionsConditional Sentences Type 0, 1 and 2Reported Speech and Reporting VerbsPast Tense vs Present TenseArticles and PrepositionsGrammar - ConnectorsSubject and Verb AgreementArticles - rulesWh- Questions Present Simple TenseTransitional WordsOther quiz:
Grammar › ViewMy uncle is taller than my father, but my father ….
A. older
B. is older than
C. is older
Grammar › View
Choose the correct word
In 1998, ________ few mobile phones in the world.
_______
A. there was
B. there were
Coordinating Conjunctions › ViewShe has a lot of experience, _____ she is not very confident in her abilities.
A. or
B. but
C. and
D. yet
Tenses › View
My cat ________ (not to enjoy) fish
A. doesn’t enjoys
B. doesn’t enjoy
C. doesn’t to enjoy
