[ Grammar ]
Visitors to the zoo _____ feed the animals.
A. have to
B. don’t have to
C. must
D. mustn’t

Random Topics:
Conditionals and Modal VerbsPast Simple (to be)Present Perfect Simple & Present Perfect ContinuousAdjective & AdverbsDefinite and Indefinite ArticleHow much and how manyTransportation VocabularyVerb ConjugationParts of SpeechPresent and Past TensesOther quiz:
Grammar › ViewIf she _______ (work) hard, she ________ (pass) the test.
A. works/will pass
B. works/passes
C. will work/will pass
D. will work/passes
Tenses › View
I feels great!
A. TRUE
B. FALSE
Conjunctions and Sequence Connectors › View____ the weather was bad, we went for a hike.
A. Because
B. Although
C. So
D. Since
Grammar › View
The last time I saw her was in 2015. It is 2019 now.
A. I haven’t seen her for 2 years.
B. I haven’t seen her since 2015.
C. I last saw her in 2019.
D. I have seen her since 2015.