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:
Simple Present Tense › ViewWhich of the following sentences is correct?
A. Mary go to school everyday.
B. Mary going to school everyday.
C. Mary goes to scool everyday.
D. Mary gone to school every day.
Grammar › View
The man to ________ I was talking yesterday is a very famous musician.
A. that
B. who
C. which
D. whom
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