[ Modals of Advice ]
Most dinosaurs walked on land, but some ___________ fly or even swim.
A. could
B. couldn’t
C. should
D. shouldn’t

Random Topics:
Verbal CommunicationSimple Present Tense/be/Present ProgessiveProgressive TenseIndependent ClausesVerb BEModals and Present TensesPresent simple or Past simpleZero & First ConditionalTime ClauseFamily VocabularyOther quiz:
Grammar › ViewThe stormy weather made it impossible for the team ______ the mountain safely.
A. to climb
B. climbing
C. climb
D. climbed
Grammar › View
Derek said that he and Belinda ……………………………… (see) Adam recently.
A. has seen
B. had seen
C. have seen
D. were seeing
Modals › ViewThey ……. finish their homework before the dinner, because the deadline is at 7 PM
A. should
B. has to
C. must
D. have to
Grammar › View
She hasn’t come home ………………
A. Still
B. Already
C. Yet
D. Till
E. None of the above
