[ Grammar ]
You _________ open the door on an airplane when it is in the air
A. Mustn’t
B. Shouldn’t
Select your answer:

Random Topics:
Modals of Necessity and SuggestionNouns, Articles, DeterminersConditionals and WishesSimple Present and Simple PastPresent Continuous for FuturePresent Perfect vs Past Simple TenseWish SentencesComparative Adjectives and AdverbsPresent Perfect Simple & Present Perfect ContinuousArticles and NounsOther quiz:
Subordinating and Coordinating Conjunctions › ViewGoing to school while working full time is difficult, but the rewards will pay off later.
A. Subordinating, while
B. Coordinating, while
C. Subordinating, but
D. Coordinating, but
Present Simple Tense › View
My mom (cook) __________ delicious meals for us.
A. cooks
B. cook
C. cooking
D. is cooking
