[ Verb Agreement ]
Both of the solutions (is/are) effective.
A. is
B. are

Random Topics:
Adjectives and PrepositionsArticlesAdverbs of frequencyLinking WordsNouns and QuantifiersDeterminers & QuantifiersPronouns/ Present TenseCoordinate ConjunctionWho or WhomFuture - will / going to / present continuousOther quiz:
Vocabulary and Grammar › ViewWhat does the prefix ‘sub-‘ mean in the word ‘submarine’?
A. under or below
B. near or beside
C. inside or within
D. above or over
Modals › View
You ___ study harder if you want to pass the exams.
A. would
B. could
C. should
D. need
Asking and Giving Suggestion › ViewLinda is working on her homework, but she finds some difficult questions. What will you suggest her?
A. I think you should stop studying.
B. maybe you can sleep now.
C. What if you drink to refresh yourself?
D. what about going to your friend’s house to study together?
Grammar › View
Sam ____________ Italian before he moved to Rome.
A. studied
B. was studying
C. study
D. had studied
