[ Future Tenses and Modals ]
How do you express a strong obligation with ‘must’?
A. You must + base form of the verb.
B. You must + infinitive form of the verb.
C. You must + past form of the verb.
D. You must + gerund form of the verb.

Random Topics:
Gerunds and TensesTime ConjunctionsPositive and Negative Connotations-ed or -ingFrequencyModal Verbs of PermissionComperative and SuperlativeAdverb Of PlaceConditional Sentences Type I, IICoordinating and Subordinating ConjunctionsOther quiz:
Gerunds › ViewVoting is an important responsibility.
A. As a direct object
B. As a subject
C. Some particular verbs
D. After a preposition
Conditional Sentences › View
He __________ (catch) the train if he __________ (left) home earlier.
A. catched / might leave
B. could catch / had left
C. catches / would leave
D. might catch / leaves