[ Grammar ]
Recently, a new vaccine against measles __________.
A. has been developed
B. had been developed
C. had developed
D. was developing
Random Topics:
will, be going to, would like toTenses and ArticleArticle the or zero article (-)Prepotitions-ing form and the to-infinitiveInversion + Passive VoiceClausePast Perfect & Past SimpleSubject Verb Agreement & Subjunctive MoodReflexive Pronouns & Modal VerbsOther quiz:
Grammar › View“PIck what you like. It doesn’t have to be something _______ by us,” my parents assured me.
A. chose
B. choose
C. chosen
D. chooses
Conjunctions › View
She left early. ___ he couldn’t be on time.
A. However
B. However,
C. Even though
D. Despite
Present Perfect Tense › ViewHave you finished your work _____________?
A. already
B. just
C. yet
Modals › View
——- we have lunch in that restaurant?
A. will
B. shall
C. may
D. could
E. must