[ 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:
Gerund, Infinitive, Bare Verb › ViewHe wouldn’t let my baby ……………….with his gold watch
A. to play
B. play
C. playing
Modals › View
Tom is possibly the person you ______ speak to.
A. need
B. need to
C. must to
D. might
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.
