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

Random Topics:
Infinitives and ING FormsGrammar - Be going to-Ing and Infinitive Verb PatternsPresent Perfect or Past Simple TenseSecond ConditionalsPast Perfect Simple TenseSimple Present and Present ContinuousPast PassivePassive with ModalsSimple Present Negative and QuestionOther quiz:
Grammar › View(where/she/live) _______ before she moved to Chicago?
A. Where did she live
B. Where had she lived
C. Where had she live
D. Where have you lived
Present Perfect Tense and Simple Past Tense › View
I _____ to school every day when I was young.
A. walk
B. walked
C. have walked
D. have never walked
Future Perfect Tense › ViewBy this time next year, Brian ————— a doctor.
A. will become
B. will have become
C. will have became
Grammar & Vocabulary › View
. He decided he didn’t need so many employees in his team, so a lot of people __________ their jobs.
A. lost
B. lose
C. were losing
