Millions of smartphones ______ worldwide since the release of the latest model.
A. are sold
B. have been sold
C. have been selling
D. were sold

Random Topics:
Passive Voice and Relative ClausesGrammar ErrorsPerfect Verb TensesGrammar and PrepositionIntermediate PrepositionsAuxiliary Verbs & Question Tagstake, make, doGrammar, Conditional Sentences, VocabularyIndefinite and Intensive NounPresent Perfect or Past SimpleOther quiz:
Articles › ViewMy dad is _____ piano teacher. In fact, he’s _____ only piano teacher in our town.
A. a / an
B. a / the
C. the / an
D. the / the
Grammar › View
If the situation ________, we ________ our contingency plan.
A. will deteriorate, will implement
B. deteriorates, will be implementing
C. deteriorates, will implement
D. will deteriorate, will be implementing
Synonym and Antonym › ViewIndicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
The atmosphere at work was so bad that Brian eventually decided to hand in his notice.
_
A. notify the boss
B. apply for another job
C. give up his job
D. be given a better job
Modal Verbs in Conditionals › View
Complete the sentence: If I had known about the meeting, I ___ attended.
A. could have
B. should have
C. would have
D. might have
