[ Modal Verbs in Emergency Situations ]
If you see smoke, you ______ investigate it alone.
A. should
B. need to
C. must
D. must not

Random Topics:
Adverb of FrequencyCompound and Complex SentencesAdverbial ClausesGrammar : Must (Necessity)Gerunds and TensesPresent Simple or Present ContinuousGrammar - Future ActionWas & Were QuestionsDirect Object and Indirect ObjectPresent Perfect or Past SimpleOther quiz:
Grammar › View___ the date of Dan’s wedding anniversary? I’ve forgotten it.
A. Do you remember
B. Are you remembering
C. You remember
Tag Question › View
Ba rarely goes out at night, ________?
A. does he
B. doesn’t Ba
C. isn’t he
D. doesn’t he
Grammar › ViewI didn’t receive the email because he ______ in the wrong address.
A. write
B. had written
C. was writing
D. could have wrote
Modals of Necessity and Suggestion › View
You (5) _____________ just wait for your turn to speak. That isn’t a conversation, that’s just talking to yourself!
A. shouldn’t
B. don’t have to
C. ought to
D. had better
