[ Grammar ]
Children ____ more time outdoors with their friends before the smartphones ____.
A. were spending / have been invented
B. would spend / were invented
C. would be spending / had invented
D. have spent / are invented

Random Topics:
Gerund and To InfinitiveSecond ConditionalConditional SentencesPoetry VocabularySimple Present and Present ContinuousComparatives and SuperlativesSingular and Plural NounsPast and Present TensesPresent Perfect and Past TensesGerund or InfinitiveOther quiz:
Grammar › ViewJane hasn’t replied to my instant message … .
A. already
B. yet
C. just
D. rarely
Vocabulary › View
the action of mentioning or alluding to something.
A. reference
B. ensure
C. arising
D. disrupt
