[ 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 › ViewI’m going to the supermarket … some orange juice.
A. buy
B. buying
C. to buy
Present & Past Tenses › View
Choose the correct answer:
She … tea at 5 o’clock on Saturdays.
A. Have
B. Has
C. Had
D. Was having
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.