[ Passive and Active Sentences ]
The hens revolt because their eggs … to humans.
A. must be sold
B. must be selling
C. must sell

Random Topics:
Essential and Nonessential ClausesHow many / How much - Is there / Are thereModal Verbs - ObligationModal Verbs of Certainty and PossibilityPassive Modals in Different TensesTenses and Verb FormsSimple Present and Past TenseConjunctions & Cohesive DevicesThird ConditionalPast Perfect Simple & Past Perfect ContinuousOther quiz:
Grammar › ViewMy sister wasn’t there when I got home because she ______________(go) to the cinema.
A. has gone
B. had gone
C. goes
D. went
Simple Past Tense › View
Did you _______ your homework?
A. Does
B. Didn’t
C. Did
D. Do
Yeah. He has accused us ___ his emails
A. ignore
B. of ignoring
C. to ignore
Grammar › View
If you need to reach us, we ____ at the Fairmont Hotel that time.
A. will be staying
B. stay
C. have stayed
D. will stay
