[ Modal ]
The students _____ ask a question to their teacher during the activity.
A. must
B. have to
C. may
D. may not

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Modal and Auxiliary VerbsThe Future Simple TenseModals for Necessity and SuggestionsMixed ConditionalsModals and PrepositionQuestion Tags in Verb TensesWas and WereWish / If only ( Present)Tenses (Present, Past, Future Forms)Conditional Type 1Other quiz:
Conjunctions › ViewIdentify the conjunction: “We need to wash our hands ______ eating.”
A. When
B. After
C. Before
D. Although
Grammar › View
A few years ago, Mike _______ his own fast food restaurant.
A. opens
B. opened
C. has opened
D. was opening
