[ Grammar ]
It has been____ proven that babies can’t produce tears in the first week.
A. Science
B. Scientist
C. Scientific
D. Scientifically
Select your answer:

Random Topics:
Past Perfect Tense and Past TenseModals for ObligationSuch...that, so ......thatPast Tense vs Present Perfect TenseJobsAbstract NounsAsking and Giving SuggestionPrepositions of Time and PlacePrepotitionsCoordinating Conjunctions and Comparative AdjectivesOther quiz:
Present Perfect Tense › ViewWhere ……… I ………. my wallet ?
A. have / left
B. has / left
C. am / leave
Grammar › View
_______you_________(drink) coffee every afternoon?
A. Do/drinks
B. Do/drink
C. Does/drink
D. Does/drinks
