[ Grammar ]
The scientists ____________ the cause of the problem. (not/understand)
A. not under stand
B. do not understand
Random Topics:
Comparatives - SuperlativeGrammar - ConnectorsNarrative Tenses & ConditionalsModals for Ability, Possibility and PermissionHas and HaveQuestion tag and + - AgreementIntensifiers: Really vs Very-ed or -ingBecause / soModals for ObligationOther quiz:
Grammar › View
Is there a broom in the kitchen?
A. No, there isn’t.
B. Yes, there are.
C. Yes, there is.
D. No, there are.
Grammar › View
Scientists finally …….. find a cure for the disease after years of research.
A. managed to
B. can
C. could
Infinitive › ViewDo you want___________ basketball?
A. to play
B. play
Modals › View
____ you help me carry these boxes?
A. Can
B. Should
C. Might
D. Must