[ Expressing Obligation and Modals ]
You …. use a telephone in class.
A. must
B. must not

Random Topics:
Auxiliary Verbs, if, unless and ModalPoetryZero & First ContidionalGrammar (want to/ need to/ have to)Verb & GrammarConditional SentencesPunctuation and GrammarTenses UsagePresent Simple vs Present ContinuousPresent Perfect Simple & ContinuousOther quiz:
Future Time and Tenses › ViewI think my best friend ____________ the new job next month.
A. will start
B. is starting
C. going to start
Describing Words › View
The road is very ………….. and bumpy.
A. smooth
B. rough
