[ 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:
Modals and Past Tenses › ViewWhich sentence describes a past action that happened at a definite time not mentioned?
A. She had been working as a clerk.
B. She wrote a letter.
C. She has written a letter.
D. She is writing a letter.
Grammar › View
The car is in excellent _____ after the repairs, and it runs perfectly.
A. Situation
B. Condition
C. Color
D. Design
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
