[ Modals ]
Choose the best modal to complete this sentence:
Tarsiers are endangered species. Environmentalists tell us that we ____ protect them.
A. must
B. have to
C. need to
D. should
Select your answer:

Random Topics:
Must / must notGerunds and InfinitivesBe going to / WillGerund and InfinitivesModals and Comparative SuperlativePunctuating ClausesStative Verbs and TensesGrammar & TensesDeterminers & QuantifiersIELTS VocabularyOther quiz:
Tenses › ViewThey ______ their grandparents last summer.
A. visit
B. visited
C. are visiting
D. have visited
Grammar › View
We ….. in the English class.
A. are
B. was
C. am
D. is
