[ Grammar ]
The sales of smartphones _______ declined since last year.
A. has
B. have
C. having
D. had

Random Topics:
First ConditionalPast Tense & Present Perfect TenseModals in the Past - Speculation and DeductionSimple Past or Past ContinuousDefinite and Indefinite ArticlesVerb + InfinitiveArticlesPast Tense and NeutralVerbs and PrepositionsCity PlacesOther quiz:
Grammar › ViewDo you do karate on Mondays?
A. Yes, she does.
B. No, I don’t.
Adverbs of Time › View
Identify the adverb of time:
I am going to school this morning.
A. this morning
B. going
C. to
Modal Verbs › ViewIf you’re feeling stressed, you __________take a break
A. Should
B. Must
Present Tenses › View
It tastes absolutely delicious.
A. Taste has a stative meaning here.
B. Taste has a dynamic meaning here.
